A detective goes undercover in a drug ring and allies with a member of the drug ring in order to take it down.

Chubby high school student and Madonna-devotee Oh Dong-ku is a trans woman living with her abusive, alcoholic father. Dong-ku works part-time to save money for the sex reassignment surgery she craves. Despite being told that she has the perfect physique for Korean wrestling, Dong-ku has no interest in taking up sports — but when she finds out about an upcoming tournament with a large cash prize going to the winner, she changes her mind and signs up for the team.

A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She suspects the school for what’s happening and tries to discover what secret is hidden.