Tsubasa and Masaya, a couple with a penchant for cleanliness. One day, a construction worker working on the road in front of their house comes to their house asking to use the toilet. Masaya, who is obsessive-compulsive, refuses, but is forcibly taken into the house and has his toilet urinated in. The next day, while Masaya is out, the workers come again and, angered by Tsubasa's nagging, they gang up on her. At first, Tsubasa, who is also obsessive-compulsive, feels so disgusted that she wants to vomit, but gradually, she begins to feel a sense of pleasure from being defiled.
