In the bayou, Shelby goes diving in gator infested waters. Up north, rivals Rygaard and Oakes square off on a one-way road and a Rygaard driver is nearly killed when his truck flips. Down in Florida, the Dreadknots go their separate ways as Kraken and Katelyn set sail with their own boat. And in Alaska, the hottest day of the season gets even hotter for the Papac crew when a fire breaks out on the mountain.