Deep in the Louisiana Bayou, Shelby the Swamp Man is back in action, and this time he's on a special mission. This job is about more than just cashing in. Shelby's client needs top quality logs to build high-end furniture that will raise money for a local charity.

After stumbling upon a rare historical artifact, Shelby forms an unlikely alliance with Professor Sam Hyde of Southeastern Louisiana University, when they realize they are the perfect team to discover the lost history of the Swamp.

The Ax Men are back to take on North America's deadliest job. Gabe Rygaard faces the toughest challenge of his career as he struggles to keep the family operation in business without his father Craig, who suffered a career-ending injury last season.

The already shorthanded Rygaard crew fights Mother Nature as temperatures climb and a massive forest fire burns just over the mountain. Joe is still reeling from his injury, and what should be easiest site of the job could already be too much for the Papac crew.

With Rygaard off to a tough start this season, Gabe is left with no choice but to call upon his son Aidan to step up and fill the family shoes. In Alaska, an overcrowded landing means one wrong move could wipe out the Papac crew below.

In Washington, production's soaring with newest generation of Rygaard on the job, but with an ominous blood sun in the sky the day looks ripe for disaster. In Wyoming, David Zitterkopf is back in action with his son Levi to take on their biggest ever job.

Rygaard Logging has been behind the eight ball all season, but when the crew gets surprise visit from logging legend Craig Rygaard, it's game on.

On Washington's Olympic Peninsula, Rygaard Logging is fighting to get back on track with the help of patriarch Craig Rygaard. But it's Craig's way or the highway, and his return to the mountain is rubbing some of the crew the wrong way.

In Washington, Gabe Rygaard pushes his crew to breaking point. Meanwhile on the Mississippi, Delta Gary and Eddie blow up their business to cash in on green gold. Over in the bayou, the Swampman plays demolition derby to help keep the community safe, while in Wyoming one wrong step by David Zitterkopf could see his family empire fall to pieces. In Florida, a mutiny is underway among the Chapman crew.

As Papac Alaska pushes deeper into their seven thousand acre site, Joe and Coatsy hike out into the harsh wilderness to devise a plan of attack for the next section of this massive project. Meanwhile in Washington, Rygaard Logging is struggling to get the wood out.