A housewife named Yui feels unfulfilled with her mundane life. Her relationship with her husband has grown cold, and they barely have any intimacy at night. One day, a friend invites her to work as a part-time maid at the home of an acquaintance who is an artist. She gets hired immediately but starts to notice that beautiful women visit every day, which bothers her. Then, Yui enters the restricted workshop and witnesses a woman bound with ropes, writhing in ecstasy…
