The fourth season of Ax Men returns and this year, the stakes are higher than ever. Father-and-son team Craig and Gabe Rygaard are back to take down reigning top dog J.M. Browning, but newcomer Papac Alaska Logging is gunning for both of them. Braving a remote island off the coast of Alaska, these guys play by their own rules and will stop at nothing to conquer one of America's final frontiers. Pihl Logging also returns, this time with a secret weapon whose arrival shocks the entire crew.  While the mountain's top dogs battle it out in the northwest... in the other corner of the country, the aqua loggers also return.  Jimmy Smith is back to reclaim his son and challenge rival Collins to a Log-Off in the black waters of the Suwannee River, while swamp logger Shelby Stanga is on a mission to find an assistant in the backwoods of Louisiana. It's the start of the most explosive season yet in the race to get the country's green gold and get out alive.