Purpose of Cohabitation

Seung-gu, a photographer, and his wife Yoon-hye are enjoying their honeymoon period. On his way to work, Seung-gu exchanges a brief look with his senior cousin, who also happens to be their neighbor. Meanwhile, Yoon-hye, who is comfortable with her body and fitness, goes to the gym for a workout and overhears the breakup between Tae-jun, the personal trainer, and his girlfriend. After the breakup, Tae-jun is forced to leave his girlfriend's house and has nowhere to go. To help him out and cover the repair costs of their vehicle, Yoon-hye offers Tae-jun a room to rent in their home. This arrangement leads to an intentional cohabitation among the newlyweds and Tae-jun.