Sanae is the kind of wife anyone would envy. She is young, very sexy, and gentle. However, after four years of marriage, her husband worries whether he is good enough for her. For a long time, he has been unable to have sex with Sanae, yet she has never complained about it. He begins to think of ways to make his dear wife happy and eventually asks a friend to have sex with her. While secretly watching his wife with another man, he starts to feel incredibly stimulated...