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.

Na-mi, a transfer student, becomes a laughingstock on her first day of school because of her strong southern dialect. Six girls jump in to help the new kid adapt to the new environment, and the girls come to call their circle of friends “Sunny.”

Mr. Kim is jobless, lost in debt and has been dumped by his girlfriend. He decides to end it all by jumping into the Han River – only to find himself washed up on a small, mid-river island. He soon abandons thoughts of suicide or rescue and begins a new life as a castaway. His antics catch the attention of a young woman whose apartment overlooks the river. Her discovery changes both their lives.