Takuro Hayami transfers to the previously all-girl university of St. Arcadia, and his once-normal life immediately takes a troublesome turn. After his innocence is stripped away by strange dorm mates, a nagging two-faced friend, a nymphomaniac teacher and several corrupted sports clubs he fears that things can't get any worse. That is, until he meets the sadistic heiress Leona Morimoto... Will he fall pray to Leona and her perverted minions?