As a full moon rises over Southern Louisiana, the swamp comes alive. Daniel and Zak try to cash in on a feeding frenzy with an open-water hunt. Ronnie and Timmy work to eliminate a massive nuisance gator threatening their friend's property. Leron and Porkchop gear up for a showdown with their elusive nemesis, Iron Jaw. Jacob and Little Willie try to reach a ten-foot average. Troy enlists Chase's help to fill his boat quickly, so he can officiate Pickle's wedding.

Jacob and Little Willie face a frustrating day as they discover multiple poached lines, forcing them to set up a hidden camera to catch the culprit. Ronnie recruits Chase Landry to help him fill his boat with giant gators, forming an unstoppable team. Bruce welcomes Anna back to the boat after her injury, but her wounded thumb forces them to adjust their strategy. The King of the Swamp Troy Landy brings his grandsons Ridge and Moose out for a special hunt, teaching them the family trade while battling monster gators. Daniel Edgar and Zak return to the legendary hunting grounds of Grande Noir, only to discover something even bigger lurking in the waters.