Plot

A late-night séance reveals the presence of a ghost haunting a class of 12th grade students in an all-boys school, impelling them to suspect each other.

In an all-boys school, a class of 12th grade students discover through a late-night seance the possibility of a ghost haunting their homeroom. After realizing that their class of 21 students was supposed to have only 20, strange events start occurring and they are impelled to suspect each other, thinking the ghost might be posing as one of them.

In an all-boys school, a class of 12th grade students discover through a late-night séance the possibility of a ghost haunting their homeroom. After realizing that their class of 21 students was supposed to have only 20, strange events start occurring and they are impelled to suspect each other, thinking the ghost might be posing as one of them.

-- Episode 1: There's a Ghost in Our Class (2021) --

The series opens with a nighttime scene at the fictional Boseok Boys' High School. Mr. Ha Dong-min (Jang Tae-hoon), the homeroom teacher of Grade 12 - Class 4, is working overtime alone inside the faculty room, his own lampshade and the moonlight providing the only illumination. He phone calls music teacher Ms. Lee Min-jung (Ye-ri Seo) about one missing report card for a mock exam. While Ms. Lee claims she had checked the report cards several times, she goes to check them once again and asks Mr. Ha not to hang up. Suddenly, his lampshade goes off due to an apparent power outage; Mr. Ha hears a noise from somewhere and steps out of the faculty room to check.

Meanwhile, some of Mr. Ha's students are still staying in their classroom despite the time. They are class president Kim Do-young (Kim Do-young) and eleven of his twenty classmates: the paranormal geek Choi Hyun-suk (Choi Hyun-Seok), the aspiring K-pop star Bang Ye-dam (Bang Ye-dam), the friendly photographer Haruto (Haruto), the quiet painter Asahi (Asahi), the enthusiastic but unsuccessful YouTube vlogger So Jung-hwan (So Jung-hwan), the diligent top student Yoon Jae-hyuk (Yoon Jae-hyuk), the illusionist and tarot card reader Yoshinori (Yoshi), the scaredy-cat athlete Park Jeong-woo (Park Jeong-Woo), the affectionate lover Kim Jun-kyu (Junkyu), the prankster Park Ji-hoon (Park Ji-hoon) and the unyieldingly prompt Mashiho (Mashiho).

With all the lights off and a few burning candles, the students are doing a séance led by Hyun-suk and Ye-dam. After some ritualistic chanting, the leaders of the séance ask for any paranormal entity present in the room to heed their summoning. Without warning, a seemingly paranormal force apparently responds to their call and the students run away in panic. They suddenly stop on their tracks: they find Mr. Ha lying unconscious in the stairwell.

A day after the incident, the students act normally but are curious about what could have happened to Mr. Ha on the stairs. Ye-dam complains of his music demo in his tablet having a strange noise that was not in it before; he thinks his classmates are playing a prank on him. After talking to a hospitalized Mr. Ha over the phone, Do-young tells the class that he is tasked to take charge of the homeroom while Mr. Ha is absent for 15 days. Unbeknownst to the class, Do-young accepted the role only for the prospect of gaining Mr. Ha's letter of recommendation for his overseas college career; Mr. Ha will grant Do-young's request if the class remains trouble-free under Do-young's leadership.

As the students transfer rooms for the next period, students Hong Sung-joon (Lee Kyung-min) and Son Won-jin (Hee-soo Chae) of the other class enters Class 4's room along with their classmates. Sung-joon tells Do-young that Class 4's room is "freezing" and he feels as if he and his classmates are inside a "walk-in freezer". Outside the building, Jun-kyu collects his class' ration of free milk; he gets scolded by teacher Mr. Jung Geun-yong (Hong-boo Kim) for taking 21 packs of milk when only 20 students are enrolled in their class. Despite knowing that their class has 21 students, Jun-kyu ends up bringing only 20 packs of milk to the homeroom.

At lunchbreak, Do-young notices a tray of untouched lunch and hears the cafeteria server whining over the tray's owner wasting his food. Later, Do-young and ten of his classmates win a football match against Sung-joon's class. After the match, Sung-joon reveals to Do-young and Jeong-woo that his team had actually cheated during the match by adding one extra player. He claims, though, that his team had a total of eleven players while Class 4's team has only ten (instead of eleven).

Back at their classroom, Jung-hwan confirms to the confused Do-young and Jeong-woo that all eleven players in their class played the football game until the end. In the midst of the conversation, Mashiho complains that everyone in their class had their ration of the free milk except him, consequently revealing to the class how Jun-kyu brought 20 packs instead of 21 after being scolded by Mr. Jung. Jun-kyu checks the class roster and sees 21 students in the list, strangely confirming their class' claim and refuting Mr. Jung's.

The confusion over class size stirs up Do-young. At the faculty room, he discovers to his shock that, indeed, only 20 students are enrolled in their class. He connects the dots--Sung-joon feeling cold inside Class 4's room, the untouched lunch at the cafeteria, and the result of last night's séance. Do-young then informs the class of his suspicion: that there is a ghost lurking among them, posing as a student of their class. The discussion is cut short when Ye-dam suddenly flings his headphones away in fright. The class listens in fear as an unnerving voice resounds from Ye-dam's music demo.

-- Episode 2: Who Could Be the Ghost? (2021) --

Wishing not to disappoint their Mr. Ha, Do-young declares that the class have to find and expel the ghost themselves without telling any of their teachers. Later at night in the dormitory, Hyun-suk reveals he has begun one of his plans to catch the ghost: by letting his classmates eat ice cream mixed with ghost-repelling red beans. Haruto, Ye-dam, Jung-hwan and Mashiho eat the red bean ice cream, and none of them reacted adversely, so Hyun-suk concludes that they are not ghosts. All of the Class 4 students do their usual nighttime dormitory activities in their rooms, except for Asahi who stayed in the Art Room to paint.

By the next day, Hyun-suk executes another ploy to catch the ghost by temperature checking, assuming that the imposter ghost should have a "body" temperature lower than that of an average human. While doing so, he grabs Asahi's hand which strangely feels cold. Later, Jung-hwan secretly takes a video of Asahi sitting in front of an easel in the Art Room with his eyes closed and holding something with both of his hands.

Back at the classroom, Jun-kyu notices that Haruto carries his school supplies in his bag and does not use his locker; Haruto tells him that he forgot his locker's password. Ji-hoon makes an uncalled-for horror prank on his classmates who consequently start talking about the ghost haunting their homeroom. Suddenly, a crow flies straight at a glass window, puncturing a hole and splaying blood on it. Just in time, Mashiho bursts into the room carrying an eerie-looking painting with what seems to be Asahi's signature; the painting appears to portray a human figure clad in a blood-red garment and sitting on a blood-red throne, surrounded by crows and crow feathers. Filled with suspicion, the class starts ganging up on Asahi who remains calm.

-- Episode 3: The Ghost's Insidious Influence on Our Class (2021) --

Genuinely annoyed despite his calm countenance, Asahi bares to the class the irrefutable evidences of his innocence. Showing a crucifix tattoo on his arm and a crucifix necklace, Asahi reveals that he is a Catholic believer and that he was at the Art Room holding the necklace to pray for their class' deliverance from all evil. He also reveals that he is suffering from a syndrome of cold feet and hands (sujongnaengjeung), which explains why Hyun-suk felt that Asahi's hand was cold to the touch. Hyun-suk and Jung-hwan apologizes to Asahi, though Hyun-suk still believes that the crow crashing at the window is still a paranormal event.

While his YouTube vlogs remain performing poorly, Jung-hwan realizes that he can take advantage of the paranormal events happening at school. He goes to the school building late at night to livestream a new vlog. Along the way, he runs into the school's security guard (Myung-chul Han) who was trying to fix the hole that the crow punctured in the window at their classroom. Jung-hwan tries hunting the ghost using a "ghost finder" application in his tablet but he ends up in failure, though the resulting vlog attracted significantly more viewers for the first time and increased his channel's subscribers.

Meanwhile, Jae-hyuk has been sensing a paranormal presence which haunts him at his dorm and has seemed to cause his academic performance to decline. On the following day, he asks Yoshinori, who has a grandmother working as a "mudang" (Korean female shaman), for a "bujeok" talisman that can repel the paranormal force afflicting him. Do-young confronts Jung-hwan about the ghost hunting vlog, fearing that their class' ghost problem might blow up and reach the other teachers including Mr. Ha. While Ye-dam tries to calm the class down, Asahi nonchalantly says that the ghost is "over there", nodding his head towards Haruto. His classmates do not believe him, while Haruto appears flustered.

Jae-hyuk obtains the bujeok that Yoshinori's grandmother made and attaches it on the double-deck bedstead, on the underside of the upper deck where his dorm roommate Haruto sleeps (Jae-hyuk sleeps on the lower deck). Later at night, Haruto lies on his bed to sleep but the bujeok reacts to his presence and burns his skin. Holding in the pain, he steps out of dorm and goes to their classroom to check the burn on his back.

In a series of flashbacks, it is revealed that while Haruto did eat Hyuk-suk's red bean ice cream days ago, he furtively left the red beans out and threw them into the garbage bin. On the night of Mr. Ha's accident, he was the one who responded to Hyun-suk and Ye-dam's séance. These all point to one fact: Haruto is Grade 12 - Class 4's resident ghost, the extra "student" that Do-young and his classmates have been fearing of. In the episode's "cookie video" (post-credit scene), it is revealed that Asahi knew of Haruto's identity through the scary painting that bears his supposed signature: it was Haruto himself who drew the painting in an apparent attempt to frame Asahi and deflect Class 4's suspicions away from him.

-- Episode 4: If You Pretend to be the Ghost... The Ghost Itself Will Punish You (2021) --

On the following day, Jae-hyuk asks Yoshinori for another bujeok, this time to be attached at their classroom, after the one he attached at his dormitory room effectively deflected last night the paranormal presence haunting him, not knowing that it was his roommate Haruto. The scar that the bujeok burned is still fresh that Haruto shouted in pain when his classmates accidentally bumped onto his back.

Meanwhile, Jung-hwan is struggling with his YouTube channel which has been receiving messages from subscribers waiting for his next livestream on the school's paranormal activity. He starts a livestream at their classroom during recess but nothing out of ordinary happens, making his subscribers disappointed.

Desperate to satisfy his subscribers and get more online following, Jung-hwan secretly contrives a series of fake paranormal activities to cause fear among his classmates while he furtively films the scene with his smartphone. At music class, he hacks a remote-operated metronome to make his classmates think the ghost is haunting them. Later, he caused a replica of Edvard Munch's "The Scream" to crash into the corridor. He also deliberately tampered Jun-kyu's large teddy bear (a gift for Jun-kyu's girlfriend); when Class 4 settles in the classroom, he stealthily plays on repeat a recording of Jun-kyu's "100th daysary" greeting song while Jun-kyu discovers to his horror the tampered teddy bear.

Later at night at the dorm, Jun-kyu sleeps beside his roommate Ji-hoon, while Jung-hwan compiles his footages to a video for his YouTube channel. Haruto unknowingly and unintentionally gives away his true identity to Jae-hyuk, who noticed that Haruto does not cast his shadow on the floor.

On the next day, Jung-hwan uploads the video of the fake paranormal activities, further upsetting Do-young. The two get into a more heated argument in which Jung-hwan expresses his suspicion that Do-young must be hiding something from the class, something that makes him sensitive about the homeroom's current state. Jae-hyuk obtains from Yoshinori a new, more powerful bujeok, but he has become hesitant to use it after knowing who the ghost is.

At night, back in the dorm, Jung-hwan attempts to get back at Do-young (who is his roommate) by hacking Do-young's smartphone to make it seem haunted. While preparing his ruse, he receives a phone call from an unknown number labelled "Stop messing around, So Jung-hwan" and his phone freezes. He hurls his smartphone to the floor, unnerved and knowing that his phone appears to be haunted. The label for the unknown number changes to "This is my final warning." Behind him, the door to their room opens slightly and reveals Haruto in his ghostly form, staring coldly at him.

In the episode's "cookie video" (post-credit scene), it is shown that Jung-hwan's haunted phone is teleported to his desk. When he picks it up, the phone has already opened a messaging app, which contains a text message saying, "This is my final warning. Stop pretending to be a ghost to scare people. I'm the real ghost."

-- Episode 5: The Classroom That Is Truly Haunted (2021) --

The episode opens days after the events of the previous episodes. Back at the Grade 12 - Class 4 classroom, Yoshinori is predicting his classmates' future using tarot cards. He warns Jeong-woo that danger might come at him and he has to be cautious for a while. Haruto goes next but he unwittingly gives away his identity to Yoshinori, who noticed that the cards Haruto picked signify that he is not human.

Class 4 prepare themselves for the upcoming Spring Festival, for which they put together a haunted house booth. In the episode's "cookie video" (post-credit scene), it is revealed that Ms. Lee had convened a meeting among all class representatives in the school. The representatives draw lots to determine what concept each of their classes shall adopt for the Spring Festival. On Do-young's turn, he unexpectedly picks the haunted house booth concept.

Amidst the flurry of preparations for the booth, Do-young receives a phone call from his father who is pressuring him to get the letter of recommendation from Mr. Ha so that he can go to New York University (NYU) for his college studies. This reveals that Do-young was actually forced by his father to excel in academics; he accepted the role of a class president to get additional points since his grades "are not good enough."

On the day of the Spring Festival, Class 4 opens their haunted house booth, which spans an entire school building. Each pair of entrants to the booth shall accomplish a series of missions before escaping the booth, within which some of Class 4 students cosplay various horror and fantasy characters. Do-young, wearing priest robes, is at the entrance to meet the customers. Sung-joon and Won-jin, the booth's first customers, remain unflustered by Class 4's meager attempts to scare them and easily finish all missions inside the booth. The pair did not notice Haruto and simply went past him, signifying that Haruto is visible only to anyone from Class 4. While Sung-joon and Won-jin spread the word that the haunted house booth was no fun, Class 4 worries over snacks about losing their customers. Jung-hwan, particularly, complains that their class' resident ghost is not doing anything in such occasion.

A new pair of customers arrives at the haunted house booth and the Class 4 actors go to their positions. This time, Haruto decides to intervene in order to save the booth. Using his powers as a ghost, he haunts the entire haunted house booth by creating a series of paranormal phenomena, which caused the new pair of customers to run in fear inside the building without properly accomplishing the missions. Unintentionally, the haunting also becomes perceptible to Class 4; both Class 4 and the customers flee the building consequently. Class 4 notices that two of their classmates are missing: Haruto and Jeong-woo.

Still inside the booth, Jeong-woo calls out to his classmates, unknowing that have exited the building. Amidst the haunting, Jeong-woo trips and falls flat on his back just as Haruto comes to his aid. In his haste, Haruto unwittingly teleports to Jeong-woo's side, causing Jeong-woo to faint in shock. Do-young, the school guard and Mr. Ha (who has been discharged from the hospital) rush to the building and find Haruto beside the unconscious Jeong-woo.

-- Episode 6: Hide Well, The Ghost's Identity Will Be Discovered (2021) --

Jeong-woo is rushed to the hospital for treatment and has become mute due to the shock of what happened to him at the haunting incident in the school's Spring Festival. The atmosphere within Grade 12 - Class 4 is filled with worry and suspicion, while Haruto is gripped with guilt and the fear of his classmate's rejection.

Do-young convenes the class for a meeting about Jeong-woo and the haunting incident. As the class start pointing fingers at each other, Yoshinori plays an audio recording of the "Okgapgyeong" (Scripture of Precious Armor), a Korean shamanistic ritual used in expelling evil spirits ("akgwi"). While Haruto is not of evil nature, he reacts adversely to the Okgapgyeong, which causes painful blisters on his skin. Jae-hyuk notices that Haruto is holding in the pain and can barely tolerate it, so he intervenes and turns the Okgapgyeong off, much to their classmate's annoyance.

On the following day, Jae-hyuk disposes the bujeok he had attached beneath Haruto's bed at their dorm room. Before going to class, Haruto pays a visit to Jeong-woo and tries to apologize to him. The memory of the incident at the school festival causes Jeong-woo to have an anxiety attack at the sight of Haruto. At school, Mr. Ha interrogates Do-young about the incident, thinking that Jeong-woo is being bullied and has been pushed down the stairs at the school festival.

Later at night at the dorm, Jae-hyuk is alone in his and Haruto's room; he steps out of the dorm to look for Haruto. Do-young happened to be also outside the dorm to take a phone call, and he sees Jae-hyuk leaving the dorm.

Jae-hyuk finds Haruto on the rooftop of a school building. Unaware that Do-young has tailed him and is eavesdropping on the conversation, Jae-hyuk reveals to Haruto that he had known for a while that he is Class 4' resident ghost. He tells Haruto that he does not have to hide his identity and warns him that he has to tell the truth to their classmates as soon as possible, since Mr. Ha is already back from his 15-day hospitalization.

On the following day, at school, Do-young tries verifying what he had heard from Jae-hyuk by pointing at Haruto and asking Sung-joon if he can "see him". Sung-joon, who cannot see Haruto, gets unnerved by Do-young's question, thus confirming that Haruto is indeed a ghost and is visible only to anyone from Class 4. Later at dismissal time, Do-young finally exposes Haruto to the class and forces him to admit that he is their homeroom's ghost. Haruto, who is not yet ready to open up, is speechless as his classmates start murmuring in disbelief.

Just in time, the security guard comes into the classroom and calls Haruto, telling him that Mr. Ha is sending for him. Without a word, Haruto walks to the door, but the security guard holds onto him before he could step out of the room. Haruto tells the security guard to "step aside"; to his classmates' utter shock, the security guard replies, "You have to let it go now, son..." Hesitantly, Haruto turns to face his classmates as the lights in the room flicker and his eyes glint in ghostly blue.

In the episode's "cookie video" (post-credit scene), it is revealed that it was the security guard, Haruto's father, who intentionally lured Mr. Ha into the stairwell and pushed him down the stairs on the night of the teacher's accident. Horrified by what he had done, the security guard tells the unconscious Mr. Ha that he "had no choice" but to do it in order to protect Haruto. Minutes before he did the crime, he had actually eavesdropped on Mr. Ha's conversation with Ms. Lee over the phone about the missing mock exam report card. The security guard escapes when he hears voices of Class 4 rushing to the stairwell (because of Haruto haunting them during the séance). Back in the faculty room, the telephone handset Mr. Ha was talking to is still left on the desk. Unaware that Mr. Ha is no longer on the line, Ms. Lee is heard explaining that all report cards have been delivered, "everyone, including the 20th student Choi Hyun-suk," a fact that would have led to Mr. Ha suspecting about Haruto. The security guard arrives in time at the faculty room to put the handset back, stopping the phone call.

-- Episode 7: There's No Ghost in Our Class Anymore (2021) --

Teary-eyed, Haruto finally admits to his classmates that he is the ghost they have been looking for. Jun-kyu (Junkyu), one of his closest human friends, berates him for not telling the truth sooner. As a livid Hyun-suk asks him why he haunts Class 4, Haruto starts recounting his tale.

Haruto reveals to the class that he was once a 12th grade student in Class 4 ten years ago. He was a sickly boy who rarely went to class due to his illness which ultimately led to his death and his spirit becoming the resident ghost of Grade 12 - Class 4. Ten years after his death, he became visible to Class 4's present batch of students and to its present homeroom teacher Mr. Ha, becoming the 21st "student" in a class that is supposed to have 20 students only. He became close friends with Jun-kyu and Ji-hoon, the first students he was able to interact with after death. Yearning to have a normal school life despite being a ghost, Haruto is fond of taking care of his classmates and enjoys taking photos of them using his Polaroid camera.

Promising not to scare his classmates ever again, Haruto pleads his classmates to stay being friends with him and tries to explain that he did not intentionally hurt Jeong-woo at the school festival, but many of them do not believe in his innocence. The confrontation between Haruto and his classmates is interrupted as Mr. Ha arrives to dismiss the class. The security guard (Haruto's father) breaks down in grieving tears on the stairs. In a flashback, it is revealed that he hid the funerary urn that contains Haruto's ashes inside the boy's own locker in Class 4, the final straw that led to him haunting the classroom. Haruto's ashes hidden inside his locker also explains why he never uses his locker to store his school supplies.

Class 4 remains divided on whether nor not to accept Haruto. Afraid to face his classmates, Haruto skips class on the next day and goes to help his father in cleaning the school. Do-young, still pressured by his father, asks Mr. Ha about the letter of recommendation. Mr. Ha rejects his request, expressing his disappointment that he failed to manage his classmates.

Filled with resentment and blaming Haruto, Do-young proposes to his classmates to have the homeroom exorcised. Since the class has a divided opinion on Haruto, it is decided that the class shall conduct a poll on the matter on the next day. Before the poll, Jun-kyu and Ji-hoon visits Jeong-woo at the hospital to ask him about what happened to him at the school festival. Jeong-woo admits that it was not Haruto's fault, convincing the two to oppose the exorcism. On the following day, Jeong-woo is discharged from the hospital and arrives at school to join the poll, which results in a narrow vote against Haruto's exorcism.

In the faculty room, Mr. Ha asks Ms. Lee about the missing mock exam report card that he had requested on the night of his accident. When Ms. Lee informs him that she checked that no report card was missing, Mr. Ha tells her that it was Haruto's report card that went missing. Nonplussed, Ms. Lee simply asks him, "Who is Haruto?"

In confusion, Mr. Ha recalls that during the first day roll call, he added Haruto's name in his class roster after Jun-kyu informed him that he did not call his name. He is surprised to learn that only 20 students are actually enrolled in his class. Mr. Jung, who was Mr. Ha's former homeroom teacher and his predecessor as Grade 12 - Class 4 homeroom teacher, reminds him of a sickly student named "Haruto" who barely could attend class and ultimately died. This "Haruto" was Mr. Jung's student and was Mr. Ha's classmate ten years ago.

Surely enough, Mr. Ha finds to his shock the class records of his late classmate Haruto in the archives of old school documents, thus confirming that the "Haruto" he has as a student is but a ghost. Mr. Ha rushes to the classroom and confronts Haruto in a fit of rage. While the distressed Haruto is silenced by his former classmate's fury, Mr. Ha then declares that there is "no Haruto" anymore in his class.

-- Episode 8: Can We Be Friends With the Ghost? (2021) --

Mr. Ha orders Do-young to take Haruto's desk outside, and he also imposes a penalty for those who attempt to talk to Haruto or even just mention his name. After being scolded by Mr. Ha, Haruto's father resigns from his job as security guard for his son's sake. Under Do-young's watchful eye, the students of Class 4 are forced to ignore Haruto until, days later, he ultimately loses his visibility and physical form.

Despite losing his visibility, Haruto continues being fond of his human classmates. During class, he restored Ye-dam's demo to its original form, helped Mashiho lift up his pen from the floor, and closed the window to keep his classmates from feeling too cold. Later at night, he haunted Jung-hwan during a livestream to help him in making the vlogs more popular, and he did his habit of filling up his former dorm roommate Jae-hyuk's empty cup with tea. Jae-hyuk happens to discover Haruto's photo album containing the photographs he took of their classmates in Class 4. On the very first page of the album, he notices Haruto's photographs of Do-young.

Realizing that Haruto was close friends with Do-young, Jae-hyuk takes the photographs and brings them on the next day to Do-young. One of these photographs was actually a selfie that Haruto took along with Do-young. Since Haruto had become invisible, his image in the photograph had vanished, leaving Do-young alone in it.

Later at dismissal, the students Class 4 are leaving their room when Mr. Ha arrives with an elderly mudang, who is no other than Yoshinori's grandmother (Goo Jae-yeon). The mudang initiates a "gut" (Korean shamanistic ritual; pronounced like "koot") to exorcise the homeroom while the students watch outside through the windows. Through the gut, she uncovers Haruto's funerary urn from inside his locker, much to the shock of Mr. Ha and the students. She raises the urn in an attempt to smash it.

Just in time, Jeong-woo rushes into the room to stop the mudang; the rest of Class 4 follow suit. Jun-kyu snatches the urn from the mudang and declares that Haruto is their friend. Hyun-suk and Mashiho tells Mr. Ha that Haruto never intended to torment them and actually takes care of them. Without warning, Haruto starts regaining his visibility but only partially, revealing himself inside the classroom. Do-young then apologizes to Haruto, causing the ghost to gain full visibility, much to the mudang's disbelief. Yoshinori stops his grandmother from interfering further as the class takes Haruto into their arms. Mr. Ha hesitantly allows Haruto to stay in the class until graduation.

In the closing scenes, narrated by Do-young, Class 4 has lived comfortably with Haruto and has forged a stronger friendship with him. Haruto ultimately graduates from high school along with Class 4.

In the episode's "cookie video" (post-credit scene), the graduated students of Class 4, now living their own lives, meet up once again at Boseok Boys' High School to visit Haruto's grave inside the campus. Afterwards, they slip inside the building and peek in delight through the windows of their former classroom: they see the ghost of Haruto happily interacting with his new friends, the new batch of students in Grade 12 - Class 4.