Father-and-son team Gabe and Craig Rygaard return to battle their nemesis, reigning "King of the mountain" J.M. Browning. But this year, the crews from Washington and Oregon have more than each other to worry about - there's been a changing of the guard at Pihl Logging as Leah Proctor, a female greenhorn, is brought on to keep the men on their toes. Newcomers Papac Logging of Alaska and Lemare Logging of British Columbia are also throwing their hats into the ring. These companies specialize in conquering the rugged Pacific wilderness, as far removed from civilization as one can get. Each morning, Papac crews load into boats that take them across miles of the roughest water in Alaska. On the other end is Suemez Island, one of the most difficult jobs Papac has ever attempted. Down south, "Swampman" Shelby Stanga is back and his sights are set on the biggest logs in the Louisiana bayous. But to claim them, he'll need help from a crew of sidekicks as colorful as he is. In Florida, James Smith and the S&S Aqua/Collins crew return to do battle on the Suwannee River. Rounding out the water logging crews is newcomer Olson Marine, a unique tugboat operation in Alaska that transports millions of dollars in timber through hundreds of miles of the most violent waters and unpredictable weather in the world.