In this episode of The River Duel, Lasse Pauhe and Kimmo Puosi travel to the Kokemaenjoki River to compete to catch summer time Atlantic Salmon and Sea Trout. Located in Nakkila, Finland, the Kokemaenjoki is a 120-kilometre river home to all manner of fish species. In the lower reaches below the many dams, legendary runs of migratory game fish are able to spawn, so the crew set out for the Nakkilankoski Rapids. While Kimmo uses his signature method of trolling plugs behind the boat catching Chub and Zander, Lasse gambles at the chance to land a Salmon on the fly.