The couple Jin-wook (Do-guk Young-jae) and Mi-ra (Noh Hyun-jung), who seem to have no problems on the surface, have not slept together for over a year. One day, Mi-ra suggests Jin-wook seek medical counseling. After hesitating, Jin-wook visits his friend Dr. Seo (Kim Joo-young), who advises him to try meeting a new partner. Jin-wook, a writer and theater director, develops feelings for Hye-ri (Park Joo-yeon), an actress in his troupe, and their relationship grows closer. Through naturally occurring sexual relations, Jin-wook overcomes his sexual complex. However, as Jin-wook grows closer to Hye-ri, his relationship with his wife Mi-ra becomes distant. Realizing he used Hye-ri as a tool to recover himself, Jin-wook decides to leave Mi-ra, while Mi-ra strives to return to their former relationship...