As a historic heatwave roasts the swamp, hunters unleash bold new strategies to fill their boats and come out of the bayou in one piece. With the heat index pushing a record-setting 126 degrees, King of the Swamp Troy Landry relies on his swamp ingenuity to find the coolest water in the bayou. Jacob risks losing his entire day's catch as he runs his lines in reverse. Joey and Zak attempt to chase big gators in cool, open waters, but their treble hook strategy hits an early roadblock. Ronnie pushes himself to the limit in the scorching marsh and threatening to bring his season to an early end.

A relentless drought and sweltering temperatures drop water levels to their lowest point in decades, and access to the best honey holes in the swamp are nearly impassable. Facing the prospect of losing thousands of dollars, hunters take huge risks to fill tags. King of the Swamp Troy Landry calls in help from veteran hunter Bruce Mitchell, whose special boat and motor allow him access to the shallowest sloughs. But Bruce is soon confronted by a massive roadblock. Willie and Little Willie blast into their favorite honey hole--The Flats--but a full boat of giants and motor issues might prevent them from leaving. Joey and Zak take their new airboat on an overland excursion to Froggy Bayou that threatens to blow up their engine, and their season. Jacob and Don bet on deep water bayous where they think gators will gather, but a blood-thirsty cannibal gator throws them a curveball.