One day, Ryoko, who lives with her husband in a rented apartment, lost her key on her way home from shopping and had to wait at her neighbor's Sayama's house. After his wife ran away, Sayama fell in love with Ryoko, who was single and beautiful, and unintentionally pushed her down. Ryoko is frightened because she can't tell her husband that she was raped by her neighbor. However, Sayama, who was invited by her husband who doesn't know anything and came to her house, plays with Ryoko's body again. Ryoko's body is attracted to such a pushy and stimulating Sayama, contrary to her heart.