After escaping from Tomator in The Lost Vikings, Erik the Swift, Olaf the Stout, and Baleog the Fierce have lived joyous and fruitful Viking lives. Then one day, after returning home from a fishing trip, the Vikings get captured by Tomator again. Tomator then calls upon a robotic guard to send them into the Arena, which falls short when a system failure happens. During the blackout, the three Vikings dismantle the robot piece by piece and wear its parts on their bodies, granting them new abilities. The three Vikings are then accidentally sent through time once again. Equipped with the new robotic gear, Erik, Olaf, and Baleog must journey through each level to find their way back home.