Sinopsis: A judge and a gang leader cross boundaries for their respective sons. Song Pan Ho is a righteous judge with a good reputation. He's brought up his son Song Ho Young ins a similar manner. Crime boss Kim Kang Heon has a cool demeanor. He loses his composure only to his son Kim Sang Hyuk who is cruel and violent like his father. An incident entangles their lives, and two fathers become monsters for their children.