- Kim Kuk do works as a crafty illegal loan shark for many years. He always manages to collect debts with unexpected methods and thus he gets the trust from President Jin who operates the illegal loan company. Ha Woo Seong is another loan shark who works for President Jin. He has a deep-rooted animus with Kim Kuk-do and intends to take revenge on Kim Kuk-do. President Jin wants to test their abilities and she sends both of them on a tough mission to find her long lost child. However, when Ha Woo-seong brings a boy to meet her, she recognizes that the boy was not her son. Meanwhile, her real child has come to meet her...