Haruhi Fujioka (Haruna Kawaguchi) is a female high school student the prestigious Ouran Academy. Unlike most of the students who come from wealthy families, Haruhi Fujioka comes from a modest family background and entered the school with an academic scholarship. One day, she wanders around the campus and stumbles by accident into the school's "host club". The host club consists of six handsome male students who entertain female students. In the room, Haruhi unintentionally breaks an antique vase worth 8 million YEN. To repay for the broken vase, the six male members of the host club makes Haruhi join them - not realizing that Haruhi is actually a girl...