Shizuka is 28 years old and in her seventh year of marriage. Her sex life with her husband is always lackluster, yet within it, she has grown accustomed to pleasure. But where are her true feelings and love? Does she ever cheat? To find out, a plan is set in motion in a hotel room. With a handsome male actor waiting and hidden cameras installed, they will discover whether this wife will have sex with a man other than her husband. That single moment will become the key to exposing her true self.