A monstrous sea serpent is terrorizing the Fjördland, destroying one fishing boat after another, eating all on board, and keeping the Vikings from going on their pillaging expeditions. All hope seems lost until a stranger with a dark past and a score to settle with the gods shows up and offers to hunt down and slay the Krökken for a thousand silver talents. Soon a ragtag group of would-be monster hunters boards a drak and, against a divine, ominous Nordic background of lakes and mist and mountains, sets sail on a perilous mission not all will survive.