Kinezaki Misa, a proud and busty delinquent, reigns as the toughest girl in school until she's targeted by the sadistic student council president, Himeno. Under the guise of a special 're-education' program, Misa is declared the school's official 'sacrifice.' Her defiant spirit is systematically crushed as she is turned into a communal plaything for the male students and faculty. The series details her complete and utter degradation, showing her being used and abused in classrooms, the nurse's office, and public spaces around the school. Her resistance crumbles episode by episode, transforming her from a feared troublemaker into a broken, mindless sex toy whose only purpose is to satisfy the carnal desires of anyone who wants her.