Shio is asked by her husband's best friend Yamaguchi to play the role of his girlfriend after he lied to his parents about having a girlfriend that he is thinking of marrying. At first, Shio agrees because she finds it amusing to see her husband get jealous, but as they go on dates to take photos to create an alibi, she begins to think of Yamaguchi as a man. One day, when she is introduced to Yamaguchi's parents, she kisses him to prove that they are dating, but she feels something that her husband doesn't feel...