In the late 1920s, Gyeonseong (Seoul), a Japanese couple were having sex as if they had lost all their humanity. This is a common occurencce for Dohyun, who works as a manager at an apartment complex where high-ranking Japanese people live. Dohyun thought he could just quietly endure it for a year... but after meeting her, everything turned upside down. He can no longer turn his back to her... He can no longer reject her... Being with her is the only option left now. "Is my body your purpose?" 'Damn... I can't believe I'm feeling like this even in this situation...! Thus begins a dangerous companionship with Dohyun and the mysterious woman.