After discovering that his wife Asami was secretly photographed sleeping by his subordinate, husband Kenichi realizes he has a deep desire for cuckolding and becomes obsessed with wanting his wife to be taken by another man. In his pursuit, he learns of the existence of a mysterious place known as The Mansion of Cuckolding. There, he attempts to fulfill his own desires by offering his wife to his subordinate. The strange events unfolding within the enigmatic mansion profoundly shake Kenichi's psyche.