A legendary partnership comes to a bittersweet end as Jeff, Mark and Lance head their separate ways; Tim gets to spend time with and old friend; and Patti and David end their season with a boatload of shine.
Winter closes in, as shiners aim to finish their seasons strong; Mark and Digger clash with the law; a breach from an intruder leaves Josh and Chuck deep in debt; and Chico and Sondra's operation is burned.
Josh and Chuck struggle to finish winterizing their site; Mark and Digger bring their two-pot still out of retirement; and Mark and Mike have enjoyed a string of successful runs, but delivering the goods could land them in the crosshairs of the law.
An ingredient has Josh and Chuck ready to quit the biz; Mark and Digger band together with JB to run their signature spirit; Tim puts his turbo-aged whiskey to the test; and Chico and Sondra have their sights on a new brew.
Jeff and Lance attempt to salvage their absinthe recipe; Mark puts his new partner to the test; rough labor and lack of profit threaten to leave Josh up the creek without a paddle or a partner; and Patti and David are without their key ingredient.
Mark and Digger enlist a moonshine legend to increase production. Later, Josh and Chuck use an old power source to prolong their operation; Chico and Sandra prepare for their first big sale of the season; and Tim risks money to save his operation.
Josh and Big Chuck go underground to build a new stash site. Mark and Digger venture out of the Smokeys and into the big city for the biggest sale of their careers. Patti and David follow nature's harvest to make a sweet new brew.
Tim Smith puts a whiskey time machine to the test; and Chico and Sandra try a new recipe to revive their stalled season. Later, Mark and Digger experiment with distilling a classic on their high-speed rig.
Mark and Digger struggle with a special recipe for a shine legend; and Big Chuck tries to redeem himself after destroying Josh's operation. Later, Chico and Sandra continue working on their still site, but disaster strikes.
A rookie mistake could ruin Josh and Chuck's operation; and Tim travels across the Atlantic to teach an old Irish distillery about making moonshine. Later, Mark and Digger's mash test is interrupted by an unwanted visitor.
Josh finds himself in desperate need of help following a catastrophe; and Chico and Sandra's moonshine partnership puts strain on their relationship. Later, Mark and Digger get innovative with their still, but the operation attracts an unwanted visitor.
Patti and David search for a clean-water source for their operation; and Mark ventures into unfamiliar territory to secure new buyers. Later, Mark and Digger employ an old trick to drive intruders away from their still site.
In the sixth-season premiere, Josh begins the moonshine season on his own, but working solo has the potential for catastrophe. Later, former outlaw Tim Smith trains his son to help run his legal outfit.