Lake Windsor on Inagua Island is home to a mystery.

In Mexico, the crew navigates a maze of crocodile and mosquito-infested waterways and lagoons in search of a rumored paradise for fishing tarpon.

Off the extreme eastern tip of Papua New Guinea lies Milne Bay and it's rumored to be home to huge schools of one of the greatest sportfish ever, the giant trevally; trying to hook and land a giant trevally on a fly rod will be the ultimate test.

The crew heads to one of the most remote and inhospitable jungles of Ecuador to try and land an arapaima, the largest scaled freshwater fish in the world.

The crew travels to Australia, where aboriginal guides take them way off the grid to a fisherman's paradise in search of barramundi.

The team follows a lead to an extremely remote river in Greenland, believed to hold massive Arctic char. With its barren tundra, towering fjords, and ice-carved valleys, they discover Greenland is wilderness at its most pure and most dangerous.

The men risk life and limb traveling through Borneo's jungles in search of mahseer, which has been fished almost to extinction.

The crew heads to Mongolia in search of taimen, the largest, most ferocious member of the salmon family.

The guys head deep into Zambia, chasing reports of large tigerfish - a fierce freshwater predator - in an uncharted river. The only thing standing in their way is 400 miles of unpaved roads, crocodiles, hippos and a serious lack of fuel.

Four friends set out on a grueling jungle expedition to investigate a rumor of giant golden dorado in an uncharted Bolivian river. In their quest to be the first to fish these waters, they face torrential rains, deadly insects and uncontacted tribes.