[Mami Sakurai's first full-scale rape and creampie film!] Mami is a neat and tidy female teacher who treats rebellious students kindly, but the strict teaching methods of her senior teacher, who is also her lover, earn the students' resentment. When student Nakano sees the two embracing each other after the insulting instruction, his anger is directed towards the young and beautiful Mami, violating her chastity. Mami is unable to resist being gang-raped, throat-humiliatingly deep-throated right next to her lover, and repeatedly creampied, leading to her downfall...