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At the dawn of a new season, flash-flood chaos from hundreds of miles north sends the bayou into a tailspin.

As historic floodwaters from the north swallow the bayou, Troy and Pickle struggle with drowned lines, until a lesson from a late swamp legend gives them a fighting chance.

The swamp's in chaos as days of northern flooding give way to a sudden, dramatic water drop, pushing territorial bulls into new battlegrounds and leaving hunters scraping bottom at every turn.

Troy rallies the Landry fleet with a bold 17-gator quota per boat, pushing every team to the breaking point as dropping water levels raise the stakes. Ronnie and Timmy make a risky call, abandoning the marsh for the deep swamp in search of bigger catches.

As a drastic drop in water levels scrambles the swamp, Mr. Daniel challenges Zak to haul in an unheard-of 100 feet of gator. Bruce and Anna flee crushing boat traffic and wind up deep in a remote slough.

As historic high water floods the swamps, Troy puts Pickle to the test, sending her on a grueling solo mission after an all-night hog hunt. Daniel and Zak wage war against a massive bull gator that's snapping lines and threatening their season. Leron and Porkchop gamble everything by paddling a tiny pirogue into uncharted backwaters. Don and Calum risk their season when an airboat accident traps them in a remote slough. Jacob struggles through a punishing day running his lines alone.

On the hottest day of gator season, a brutal heat wave pushes Louisiana's hunters - and their gear - to the brink. Bruce and Anna gamble by sinking gators in cool water to save them from the heat - and possible poachers. Daniel and Zak's day nearly collapses when their airboat overheats in the swamp. Troy and Pickle recruit a friend to help outrun the high temps. Joey and Kallie employ old-school swamp knowledge to keep their catch from spoiling.

Jacob and Little Willie hunt a legendary cannibal gator known as Bone Crusher. Bruce and Anna hide their lines to stay one step ahead of poachers, forcing Bruce to rely on his uncanny swamp memory to find them again. Troy and Pickle turn an unexpected encounter with a party barge into a heartfelt Veterans Day on the water. Chase leans on high-tech sonar to track down deep-water monsters. And deep in the flooded woods, Ronnie and Timmy gamble everything on a brutal pirogue mission.

Joey and Kallie chase down the legendary "Poseidon" through deep water and shattered lines, determined to finally end a decades-long pursuit. Troy and Pickle gamble on an old-timer's hot tip in a remote bayou. Bruce and Anna use rare high-water access to slip into untouched backwoods. Calum fights exhaustion, navigation mishaps, and massive gators alone as he pushes himself to hit his quota. Chase struggles to snipe gators in open water.

Leron and Porkchop follow a trail of bent hooks and broken branches to hunt down the infamous monster gator known as Freddy Krueger. Daniel sets an ambitious 15-gator quota for each of his family's boats. Joey and Kallie grind through rising water and fading luck to rise to the occasion. Jacob and Little Willie train the next generation to carry on the Landry legacy. Chase struggles to capitalize on access to a once-in-a-lifetime honey hole.

Troy brings in a secret weapon-his own mother-to push Pickle harder than ever. Bruce and Anna go after a giant gator that got away, while Leron and Porkchop chase a rare chance to secure 15 extra tags for next season. With Joey stranded at St. Mary's, Kallie heads into the swamp alone for the first time-and Don and Calum come face-to-face with a legendary monster lurking just beneath the surface.

With only two days left in the season, Troy and Pickle chase a legendary line-popping gator nicknamed "Lucky." Jacob and Little Willie face off in a high-stakes rifle-versus-treble-hook showdown. In cattle country, Joey and Kallie gamble on an unusual new bait to help them tag out early. Daniel and Zak battle brutal, boat-rocking giants to try and bring their season to a close. Ronnie and Timmy put their fate in the hands of Salvation Bayou, as they fight to end their gator season with a bang.

On the final day of gator season, with record-low water turning the swamp into a tough battleground in memory, every team races against the clock to tag out before sunset; Troy and Pickle grind through bad conditions; Jacob and Little Willie lean on family tradition and a treble hook to haul in monster after monster; Bruce and Anna refuse to quit on Six Mile Lake; Don and Calum battle doubt and falling water levels to prove their worth; Leron and Porkchop come up empty.