PTA president Saryu Usui grows disgusted with the mischievous student council members who cause trouble at school, so she decides to seduce a teacher and get him expelled from the academy. However, the students discover her plan and turn the tables by secretly recording her intimate moments with the teacher, using the footage to blackmail her. Ultimately, she falls under the physical and psychological control of the students, becoming an object through which they satisfy their sexual desires. This shocking story follows her tragic descent and the dramatic twists of her fate.