Three men have been friends since their school days. They do some something, believing it would be nice, but that act connects to them a crime and their friendship ends. Hyun-Tae (Ji Sung) works as a paramedic and has one daughter. He has a strong sense for justice. In-Chul (Ju Ji-Hoon) works as an insurance agent, but is known as a swindler. Min-Soo (Lee Kwang-Soo) runs a small business. He relies on his two good friends like family.