Along the Wabash River, Trapper John battles invasive jumping silver carp during his hunt for the giant flathead catfish he needs to survive the coming Illinois winter. Captain Lee Young sets off on a perilous 500 mile odyssey on his rickety homemade barge at the height of Florida's hurricane season. Meanwhile, boat transporters Kirk and Mike attempt to navigate a client's sailboat through the notorious "Graveyard of the Pacific", knowing that any miscalculation means certain death. Finally, whitewater extremists Seaver and Mike risk starvation and a grizzly bear attack during their quest to conquer Alaska's massive and frigid Copper River.