- When Mei, a college student, goes to the house where she was invited, she is told that her other female friends have slapped her. - The toast is short-lived, and Mei falls asleep with sleeping pills in the sake. This house drinking was planned to attack Mei. Men play with her unresisting girlfriend and vaginal shot. After that, she threatens with a video she shot and is forced to drink an aphrodisiac, but she loses her reason and is swallowed by sexual desire.