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.
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.
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 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 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.
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.
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 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.
