Boyd and the Crowes fly south for a crucial drug score; Raylan pursues a small time grifter with big time enemies.
Raylan ventures into wild country on the hunt for a missing informant; Boyd's last living relative threatens his life and livelihood.
Raylan tangles with a deadly branch of the Crowe family tree; Boyd goes into the dark heart of the collapsing Detroit mob.
A mob revenge plot descends upon Kentucky; Boyd's recent successes are tempered by a crushing defeat.
Raylan has one last shot at taking down Art's would-be assassin; cartel killers have Boyd's back against the wall.