As aggressive gators invade every corner of the swamp, Troy and Pickle chase the bulldozing monster called Freight Train before it rips the bayou to shreds. Alligator Queen Liz Cavalier returns to the swamp to help cull the population, while teaching her stepson how to catch giants. Ronnie and Ashley discover a sanctuary that's loaded with big gators and charge headfirst into its dangerous waters. Joey and Zak hope to jump start their season in Mardi Gras Pass, but discover a mob of monsters terrorizing their catch.
