Akari, who serves as the student council president at a prestigious school for girls, lives her days as a model student. One day, she is summoned by her teacher Nakata. He calls her in on the pretext that he will give her extra lessons as she prepares to take the entrance exam for a top university, but Nakata ends up pinning her down. Since that day, she has been called in during class, and has been subjected to fellatio, and an orgy with another teacher... Finally, she is thrown into a group of part-time students and subjected to thorough sexual intercourse.