Gunslinging Deputy Raylan Givens confronts his old friend in Harlan, Ky., his hometown, where he has been reassigned.

Following the breakup of a Miami-based drug cartel, U.S. Marshal Raylan Givens (Timothy Olyphant) pursues his nemesis-turned-ally Boyd Crowder (Walton Goggins). Meanwhile, his investigation of sex offender Jimmy Earl Dean’s (guest star Billy Miller) harassment of a teenage girl brings Raylan face-to-face with an old Givens family enemy and the matriarch of a local crime family, Mags Bennett (guest star Margo Martindale).

A dangerous new player in Lexington puts Raylan on a collision course with a Dixie Mafia hitman; Ava takes over Boyd's business while he is back in jail.

As Raylan (Timothy Olyphant) investigates a burglary that’s uncovered a diplomatic courier’s bag hidden in his imprisoned father’s house, a new preacher’s ministry cuts into Boyd’s (Walton Goggins) drug trade.

Raylan tangles with a deadly branch of the Crowe family tree; Boyd goes into the dark heart of the collapsing Detroit mob.