Ouran High's annual invitation to the cultural clubs of other schools brings members of the Zuka Club from St. Lobelia Girls' Academy into its prestigious walls. Its leader immediately recognizes Haruhi's true but disguised gender and makes it her club's foremost duty to get Haruhi transfered away from the mendacity of Ouran's Host Club and into Lobelia. The boys, of course, want to keep her, but it doesn't help their cause for Haruhi to discover they've been selling her things on the Internet to support the club's finances. Haruhi has much to consider in the day given her to make a choice.
—statmanjeff