Ami Watanabe and Yuko Asagiri, female students, are peeped by her childhood friend Atsushi and her friends while having sex in a damp old apartment. At a later date, he called Ami to the apartment and approached his boyfriend to tell the whole story, but he said, "I liked women until yesterday, but today I like men, a common story in bisexuality." Impulsively have a relationship ... The five men and women continue to burn themselves back to back with ruin. A desperate youth story.