In Southern Louisiana the Gator Gold Rush is in full swing. Buyers are paying top dollar for alligators, and Troy has a plan to get his share. He's taking a special boat called a "Gator Tail" to an old family honey hole. But when he encounters an unexpected obstacle, he risks it all to fill his boat. Junior Edwards and his son Willy are stalking an elusive beast known for his distinctive roar they call Leo The Lion. But Leo is a formidable adversary and it comes down to Leo, Willy and a pocketknife. Down at Pecan Island, Liz and her partner Kristie are taking a calculated risk of their own, hunting the canals from land to capture a monster that has been terrorizing the local population. R.J. and Jay Paul spy outsiders setting lines directly across from theirs, a direct violation of the code of the swamp. Things escalate quickly and the two-time world arm wrestling champion and his son don't hesitate to take matters into their own hands.

Tommy is on his own for the first time in his career. His step dad Joe wrecked his back while wrangling gators, so now Tommy must carry the load all by himself. Veteran Bruce Mitchell, his sidekick Tyler and their new sharpshooter Ron are hoping for another big day. To fill the boat, Bruce will move their hunt to a remote bog known as Stinky Bayou. The area earned its nickname from the methane gas that bubbles to the surface there, emitting a rotten and pungent stench. In Pecan Island, Liz and her new helper Kristi are taking a huge risk in hopes of another enormous payday. The ladies are headed to a spot that locals call "Monster Marsh," home to territorial and aggressive alpha males. While veterans with hundreds of tags hunt for numbers, over in Bayou Pigeon, rookies Austyn and Blake are looking for one beast in particular. Their buyer has given them one tag to catch one huge gator that's threatening his property.