On the hunt for massive flathead catfish in Illinois, Trapper John is nearly knocked from his boat when he's hit by a jumping silver carp, while in Florida, Captain Lee's house barge is battered by huge waves that threaten to sink him and all his belongings. Meanwhile, on the Columbia River, an electrical fire on their sailboat knocks out the navigation lights, setting Kirk and Mike on a head on collision course with another vessel. Finally, after losing their only fishing rod, whitewater extremists Seaver and Mike must risk venturing back into the grizzly bear infested woods or find a new way to secure food as they battle to survive in the Alaskan outback.