When Viking Prince Asgar's mother disappears and his life is in danger, he sets off on a quest to find her and discovers the icy fortress of Arctinrod in his father's Northern Kingdom, which is like nothing he ever imagined-a world where narwhals are the nobility and snow monsters terrorize the mountainsides. Along with his sister Kari and best friend Tuka, Asgar must navigate a harsh new world of wolf attacks, blizzards, magic swords and stolen gold. When he learns about the legend of a supernatural tusk of the narwhal king, Asgar and his friends embark on a dangerous mission to infiltrate the snow monsters' kingdom beneath the mountain to bring peace to a mystical world he never knew existed and fulfill his own noble destiny.