Yamagishi Rou unexpectedly fell into an immoral relationship with Suzuko, the mother of his classmate Akimoto Teppei. For two months, he meet her once a week behind the back of his friend and both drowned on the flesh pleasures. When he was leaving a love hotel with Suzuko, he was discovered by Mitsushima Iori, the mother that lives next to him. For the motherless Rou, Iori was the woman that took care of him the same way as a mother, and also his longed woman. Since that awkard meeting, a glommy air started to drift Rou. Before long, Rou started to make a plan to obtain Iori's body...