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 is unable to have sex with Sanae, but she never complains about it. He starts thinking of ways to make his dear wife happy and finally asks his friend to have sex with her. While secretly watching his wife with another man, he begins to feel incredibly stimulated...