A little girl is reunited with her reluctant small-time criminal father. Jong Dae is a lowlife conman and gangster who lives in a old trailer in a junkyard by the sea. Not exactly ideal father material. He is (understandably) shocked when, while in jail yet again, a social worker visits to inform him that he has a seven year old daughter called Joon (Seo Shin Ae) who has been living in an orphanage and is on her way to America to be adopted. Little Joon desperately wants to meet her daddy before she leaves.
17 year-olds Sung-eun, and Mi-sook are always curious about sexual matters that nobody teaches them about. One day, new teacher Bong-gu, a handsome and well bred stud,arrives at school and begins to teach their class. He becomes an object to watch and study. Bong-gu, although he seems fine on the outside, suffers from an unknown illness that makes him fart whenever he feels aroused. Three girls learn about this and they go on a mission to make him fart.