Two years ago, on the treacherous Kali River, high in the mountains of Northern India, Jeremy Wade unearthed the mother of all fisherman's tales and the ultimate freshwater horror: a super-sized freshwater fish turned man-eater. Jeremy takes on the biggest, toughest challenge he's ever faced as he heads back to the Himalayas to separate fact from fiction and track down the monstrous beast.

Wade travels to Germany where he meets victims of a beast that has been raising its snout above the surface of freshwaters in Europe for the past 700 years. We discover that the Wels catfish is an aggressive predator of man eating proportions.