At a certain girls' school festival, three girls, "Beautiful gal with beautiful breasts Sakura", "Top student with glasses with a beautiful ass Nano", and "Big-titted gal Misono" 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 cumming in his mouth, the three girls drive the homeroom teacher away and finally open the soapland entertainment. When the homeroom teacher comes back again, "Big-titted gal Misono" forces him in and fights back with a strong blowjob, a big-assed cowgirl position, a slippery titjob, and a creampie in her shaved pussy.