Mike Sullivan works as a hit man for crime boss John Rooney. Sullivan views Rooney as a father figure, however after his son is witness to a killing, Mike Sullivan finds himself on the run in attempt to save the life of his son and at the same time looking for revenge on those who wronged him. A mob enforcer's son in 1930s Illinois witnesses a murder, forcing him and his father to take to the road, and his father down a path of redemption and revenge.