In her latest attempt to give the S.O.S. Brigade more public exposure, Haruhi signs the group up tfor the citywide baseball tournament. Kyon manages to scrape together a full nine-person team, but it seems the only with any talent for baseball is Haruhi. Ah, well it's just a friendly game, right? With the team down nine to nothing, Haruhi's fury is causing open dimensional spaces which threaten to destroy the world! Time for the groups' unusual members to step in and play ball!