Having never been to Japan, Jeremy Wade is entering new territory in more ways than one. The river monsters there are like no others he ever has encountered, from the devastating "Namazu," which legend says causes earthquakes, to a child-snatching killer called the "Kappa." Can our extreme fisherman uncover the truth behind these legends? Can he catch a monster in the rivers of Japan that reveals the reality behind these horrific tales? He is about to find out.