Mary, a novelist and AV scriptwriter, meets actress Otsuki Hibiki during a meeting for an AV shoot. Hibiki asks Mary to come to the set, so she accompanies her. Seeing Hibiki's wild appearance in front of her makes her heart pound and her groin tingle. After the shoot, Mary is invited to drink at Hibiki's house, where they end up having their first lesbian sex. The two hit it off and start living together...