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.

The hijacking of a bus full of drugs ends in murder, and Raylan pursues the likely culprit: Boyd Crowder.

Raylan is assigned to protect a local coal mine executive as she tries to buy up land for the company but faces opposition from the Bennett clan.

A deadly home invasion hits Raylan personally, placing him in a race with Boyd and Arlo to find the killer. Mags is forced to make decisions about her involvement in the Bennett family's criminal activities and the fate of Dickie, who has a deadly plan to absolve himself of responsibility.

Following the murder of an imprisoned Dixie Mafia soldier, Raylan looks for a longtime fugitive whose ID was found inside the diplomatic pouch hidden at Arlo's house. Meanwhile, Boyd suspects the St. Cyr siblings of undermining his drug business.

As Raylan races against time to find Cairn, Ava and Boyd's search leads them to an upscale Harlan neighborhood's underground sex party.

With his identity exposed, Drew Thompson goes on the run from Raylan's law enforcement dragnet and Boyd's plan to turn him over to the Detroit mob.

Boyd's plan to keep Ava from being tried threatens to unravel while an unexpected reunion with Loretta McCready pits Raylan against two hit men working for a ruthless Memphis drug lord.