Under a bridge on the Han River, there live three poor vagrants: Grandpa, a little boy and a grumpy, reckless young crocodile (played by Cho Jae-hyun). The crocodile rules the family of three by force. He does not have a proper job and usually earns his daily necessities by guiding the bodies of drowning people for the police, gambling, fraud and small businesses. He struggled and suffered setbacks, and the small underwater space was his temporary refuge. On this day, the crocodile rescued a girl who committed suicide for love, but then he forcibly took the girl. The boy and grandfather dared not speak out angrily, so they had to fight the crocodile in their own ways. The girl also lived under the bridge from then on. With the passage of time, the cold heart of the crocodile melted gradually, and the family of four lived a poor but peaceful life. It's just that fate never seems to be willing to bless good people. This film is the debut of South Korean director Kim Kidd.