Je-woon, a member of a criminal gang, grew up in the underworld and endured a difficult life. He was particularly affected by the loss of a boy he once considered a younger brother, Moo-young, after a tragic incident separated them. Years later, fate brings them back together, but Moo-young is now part of a rival gang and appears to have no memory of Je-woon. Je-woon initially tries to keep his distance, unwilling to involve Moo-young in his dangerous world.
