Join aquatic ecologist Zeb Hogan continues his quest to find and protect the worlds largest freshwater fish in the frigid rivers of Mongolia. He will travel by plane, truck, and horseback to find the world’s largest trout known as the taimen (Hucho taimen). This is not your everyday dinner trout. This monster can grow up to 6 feet in length and weighs up to 200 pounds. Once king of the river, the taimen is starting to disappear. And as winter approaches and temperatures drop, Zeb will be up against a tight deadline. Join him and a team of scientists, anglers, and local Mongolians as they search for the worlds largest trout: the Taimen.