At a certain girls' school festival, three girls, "Sakura, the beautiful gal with beautiful breasts," "Nano, the honor student with glasses and a beautiful ass," and "Misono, the gal with explosively large breasts," plan to open a soapland as a class entertainment. Naturally, the three girls attack the homeroom teacher who is strongly opposed to the plan. After forcing a handjob, anal licking, and a blowjob and a cumshot in his mouth, the three girls drive the homeroom teacher away and finally open the soapland entertainment. "Nano, the honor student with glasses and a beautiful ass," brings Tsukada, a member of the soccer club, who has come after hearing the rumors, to heaven with a slippery blowjob in her see-through sailor uniform, a grinding cowgirl position, and a raw creampie in the missionary position.