Boat builder Karlsen had just finished building his new viking ship "WaveRider" and mounted two gems in the dragon head on the bow. The dragon "Fafnir", who owned the two gems, flew in and set fire to the ship, and bit off the dragon head with the two stones. This was the same dragon which had kidnapped the mermaid Bylja, daughter of the sea god Egir, and held her captive on Scary Island. She had to be saved and Karlsen built a new Viking ship and found a crew which could sail to Scary Island.