Mei is a high school teacher. All of her students who graduated from high school at the escalator-style school go straight to university. One day, Mei hears an unpleasant rumor. Apparently, her students have joined a sex club and are raping girls everywhere...Mei calls one of her students to her house to hear what he has to say. The student denies it, saying it's just a rumor. This decision was wrong - their ex-teacher may have found out about their misdeeds. They think that Mei will destroy the sex club if they continue like this, so they gang-rape Mei and cum inside her. At first, Mei refuses, but she becomes addicted to her student's devilish cock...