In tracking a vanished confidential informant, Raylan goes against a pair of violent ex-cons who are just dying for a showdown with "The Kentucky Cowboy."
Raylan leaves to California to follow the trails of a criminal who has evaded him twice in the past, and Raylan is determined that the third time won't be the same.
Raylan has a few drinks and gets himself beaten up, after being suspended as a Marshall. He pulls himself together and decides to jeopardise his career further by going after the thugs who have been harassing his ex-wife's new husband.
In order to work for the Marshal's Office, Raylan's dad Arlo agrees to become a double agent and work for Bo Crowder. Meanwhile, Bo sets up a meth lab to get back in business.
Raylan guides Ava through the process of informing on Boyd and tries to turn Boyd's old ally Dewey Crowe against him as well, all while Boyd works to pull off a daring heist right under Raylan's nose.