Desperate to cull the exploding gator population, the swampers employ new, risky tactics to target giant breeding Bulls. Joey and Zak create a feeding frenzy using wild Hogs as chum. A gator takes a bite out of Ashley and Ronnie. Willie Edwards teams up with his rookie son, Little Willie. And Troy and Terral embark on their most dangerous mission yet.
The swamp heats up as Daniel and Big Tee face off against trespassers. Meanwhile an old timer teaches Troy new tricks. Young guns Brock and Aaron get lost in the Bayou backwaters. Ronnie and Ashley navigate dueling airboats to a secluded honeyhole.
Troy assembles a crew to infiltrate Cow Island; Ronnie and Ashley assist the Landrys with an armada of airboats; Brock and Aaron chase their biggest beast of the season.
At the midway point of alligator season, Troy makes an urgent plea to his armada to fill more tags and sweetens the deal with a bet. Jacob and Don fish the deep waters of West Grand Lake where the biggest bull gators lurk. While Chase hunts solo, the Edwards go on a mission to catch the Moby Monster. Ronnie and Ashley journey to Gator Bayou, Ronnie's childhood honey hole, for the first time since Hurricane Katrina.
The Swamp King gambles on the secret honey hole; Willie lets his son on his own for the first time; Ronnie baits using a rotten duck; Joey and Zak look for a monster bull.
Jacob leads the Landry clan into Big Bull Bayou. Chase hunts secluded channels with his tail boat. Daniel and Big Tee track a giant cannibal. Joey hunts solo.
On the hottest day of the season, Daniel and Big Tee risk a trip into the scorching, unprotected marsh lands. Troy and Terral attempt to lure monsters into shady areas with cold-blooded beef melt. Willie teaches his son to hunt with a treble hook when the beasts won’t bite. Ashley tries to fill her boat despite Ronnie’s struggles with heat stroke.
Brock and Aaron must fill their tags by day’s end. King of the Swamp Troy Landry hunts with his dad. Ashley gets sick as she and Ronnie rush to fill their boat. Willie gives his son a final exam.
On the final day of the season, Troy and Terral try to tag out in a cursed bayou. Jacob and Don chase monsters into deep waters. Daniel’s airboat breaks down in the marsh, while Joey and Zak try to keep the family on track. Ronnie and Ashley struggle to recover from missed days on the water.