Kyon returns home from a tiring day, only to have his little sister reprimand him for leaving her alone. Once Kyon falls asleep, the SOS brigade appear in his New Year's Dream.
Kyon first arrives at the clubroom, only to be deafened by Haruhi who is throwing a tantrum because she is bored. Shortly thereafter, Kyon finds Yuki playing an eroge on her laptop with the volume turned up.
Mikuru finds the clubroom deserted, with a TV set on the table. Mikuru turns it on, to find she is the audience of a local quiz show, in which Haruhi is the host, and Kyon and Yuki are the contestants.
The computer club challenge Haruhi to a dodgeball game in the hopes of retrieving their laptops, but Haruhi decides to play a real game of dodgeball. Her reality-altering powers allow all the players to use 100% of their abilities.
Mikuru informs Kyon of extra outfits found on the clothes rack in the corner. When informed that they belong to Yuki, a small-scale cosplay 'war' breaks out. At the end of the day, Yuki finishes an anime series she has been following.
Haruhi holds a sport contest. When asked to bring 'a barrier to the heart' as part of a scavenger hunt, Kyon brings Koizumi over and tells him 'I love you', causing Haruhi to faint.
Haruhi holds a 'Close Encounters of the Third Kind' Spring Festival, in which she dresses Taniguchi as a demon and gives him food while everyone goes outside and celebrates. Yuki traps Ryoko and forces her to dress up in an outfit.
Haruhi asks for ideas for a screenplay and ends up writing about otaku maid warriors with a month to live fighting to the death, which somehow leads to Kyon exploding.
After a minor scuffle with Ryoko while half asleep, Yuki heads out for a Sunday morning outing with the SOS Brigade. Ryoko cleans up the apartment to take her mind off things, but soon grows upset being stuck inside.
Yuki hides Ryoko in a box just before Haruhi, Mikuru, and Tsuruya arrive at her apartment to make Valentine chocolates. Haruhi's plan to create a life-size chocolate version of Mikuru is deemed impossible.
Haruhi decides to celebrate Halloween, but knows nothing about the event, using a single image as reference. The group later makes up a Halloween monster .
Haruhi and Kyon have a small battle involving balloons and blow-guns. However, when Mikuru wanders into the room, she is used as the unwitting victim of a balloon-decorating contest, with Itsuki as the judge.
Using the balloons she got from Kyon, Yuki makes Ryoko a living balloon dog, although its creation is a little horrifying. While having fun with it, Ryoko walks into another trap laid by Yuki, with assistance from the dog.
Haruhi hosts a 'simple and healthy' cooking show, which to her means boiling instant noodles for ridiculous amounts of time. During the commercial, Kyon tries to practice with a katana Yuki had with her.
Kyon is joined by Mikuru, Tsuruya and Yuki, who find a stone that Yuki breaks, releasing a spirit. While trying to figure out how to dig his hole, Kyon is interrupted by Arakawa who "randomly" stops by
Curious about the motives of Santa, Haruhi sets Kyon to keep watch for him while everyone else has a Christmas Party. They encounter Taniguchi, who dressed up as Santa to return an unwanted kappa he stole from the computer club.
Ryoko and Kimidori try to pull a prank on Yuki, but she is totally oblivious. While trying to get Kimidori out from under a fridge following one of their attempts, he bursts, devastating Ryoko.
Haruhi, Mikuru, Yuki and Tsuruya attend a mall exhibition while Kyon and Koizumi attempt a jigsaw puzzle. Tsuruya fights against one of the show's monsters, who is really Mori, but is inevitably defeated.
Ryoko scolds Yuki and Kimidori for being so carefree and gets them to help with the cleaning. After it is done, Ryoko becomes curious as to why Kimidori is in a kite, and joins in their fun.
Feeling a little bored on their own, Ryoko and Kimidori discover a present from Yuki to relieve their boredom, which turns out to be a bomb. In order to save Ryoko, Kimidori carries the bomb outside before it explodes.
Haruhi and Kyon try to decide on a new look for Mikuru, although their figure drawing skills are incredibly bad. Tsuruya helps out, but seemingly, her drawing skills were also incredibly bad due to the influence of Haruhi's powers.
