Now that Haruka has the ability to transform into Cure Flora, she tries to learn ballet from Minami to feel like an elegant princess. But during practice, she scrapes her knee. Minami also gains the ability to become Cure Mermaid.
While searching for the last remaining Princess Perfume after it disappears, it turns out that student and fashion model Kirara Amanogawa has it. Haruka and Minami now have to try and convince her to join their side in facing evil.
Now that Kirara Amanogawa has the ability to transform into Cure Twinkle, Haruka tries to convince her to join her and Minami in stopping DysDark. But Kirara refuses because of her busy schedule.
Miss Shamour appears from the Princess Lesson Pad to begin training the Cures to become Grand Princesses. They learn that they must collect nine more Dress Up Keys and to stop them, Dyspear sends Lock after them.
Noble Academy hosts their annual Ball Game Field Day, where all students compete in sports and bond. Haruka chooses to play tennis, but she's paired with Aihara Yuki, a boy who bullied her as a child, forcing Haruka to confront her past.
The annual noble dinner party is upcoming. Haruka is excited, wanting to make her own dress for the party. But now she has to try and balance her time on making the dress, schoolwork, and fighting evil.
The annual noble dinner party. Haruka's finally finished working on her party dress and is ready to have fun. But Close ruins the party by taking control of a cameraman. During this, Minami also has to face her fear of ghosts.
Following the defeat of the all-powerful Zetsuborg Close conjured, he and Lady Dyspear have now kidnapped Cure Flora, Cure Mermaid and Cure Twinkle in a massive cage of despair. How will they survive this turn of events?
Haruka sees a mysterious masked woman elegantly play the violin, causing Haruka to want to follow her footsteps. But it seems like this masked woman has more sinister intentions in mind.
Noble Academy hosts its Family Reunion Day, where freshman students spend a day with their families. Haruka is excited to meet her mom, dad and little sister, Mamoka, but Mamoka isn't happy to see her. What caused this turn of events?
As part of an assignment to see if Aroma is a worthy butler, he is temporarily transformed into a human who has to try and satisfy Haruka with his service. But it seems as if he isn't good at his assignment.
As part of their summer break, Haruka, Minami and Kirara head to the Kaido Resort, the large business owned by Minami's family, where Minami reunites with her older brother Wataru. But DysDark isn't too far behind.
Kirara is excited to perform as a fashion model live on stage with her mother, Stella. But all the excitement and determination to perform well causes her great stress.
Yume Mochizuka, the author of Haruka's favorite book, "The Princess of Flowers", has arrived for book signing. Haruka is very excited to meet her and ask questions. Meanwhile, Princess Twilight intends to fight the Pretty Cure on her own.
Twilight, now known as the Black Princess, battles the Pretty Cures as they try and restore her memories as Kanata's sister Towa. If they can't break her free of the control in time, the power of the keys will consume her completely.
Kirara is given an opportunity to model in New York, which she accepts. However, her duties as a Pretty Cure seem to be getting in the way, and she has a hard decision to make when an aspiring model who looks up to her gets captured.
Kirara decides to put her modeling career on the backburner to focus on solely being a Pretty Cure. However, her friends don't want her to give up so easily, so they put together a fashion show showcasing everyone's dreams.
Minami becomes worried as she tries to decide whether to pursue her original dream of being part of the family business or her newfound one to become a marine doctor. Kirara senses this worry within Minami and tries to help her out.
With her true dream decided, Minami now has to face telling her parents that she wants to be a marine doctor in lieu of her original dream, and she becomes worried that they wouldn't support it.
It is snowing at Noble Academy, and Towa, decides to build a castle resembling the one in Hope Kingdom, and the whole school pitches in to help. Shut discovers that castle and becomes jealous of its beauty.
Haruka is lured by a mysterious bird to the inside of the Flower Castle at Hope Kingdom, and she finds herself as a princess, just like she has always wanted to be. However, it is actually a trap set by Dyspear.
With Dyspear now attacking Noble Academy, the Cures are left with no choice but to reveal their secret identities to their fellow students and faculty as they prepare to finally put an end to the evils of Dys Dark.
The determined Cures charge toward Dyspear, but she absorbs the power of Close to make herself even stronger. With not even Grand Printemps affecting her, and with the despair spreading throughout the world, the Cures start to lose hope.
Dyspear has been defeated once and for all thanks to the Cures, but Close reappears, using what was left of Dyspear's power to gain a new form. Cure Flora has no choice but to duel against him in hopes of finally conquering the despair.
