Satoshi Minagawa (Kanji Tsuda), an office worker, he seems like a serious person but in real life, he is a mania for porn movie collecting. Nao Aiba (Rubi Aiba), high school student, she wanders the town with her friend Mami rather than go to school. Sayuri Maejima (Shion Machida), unemployed, very beautiful but unorganized person. Her brother Kou gets teased from his classmates all the time, but he grows magic mushroom in his room and sell them to strangers. One day these four people who don’t have any common interests tangle up in complicated group sex party.