Tsubaki is a young married woman living in an apartment in Tokyo. Though she has a husband, she repeatedly cheats on him with various men, citing his busy work schedule as the reason. Even if her husband becomes aware of her affairs, he says nothing and continues living with her indifferently. As a result, their marital relationship grows increasingly cold. However, because she continues this lifestyle, troubles never cease. Her lovers occasionally run into each other at her home, leading to arguments and escalating conflicts. Frustrated by the complications, she begins treating the men carelessly and adopts a more aggressive attitude. Enraged by her behavior, the men decide to take action—forcing her to take responsibility by using her body.