Possessing encyclopedia-like intelligence, unusual zookeeper's son Pi Patel sets sail for America, but when the ship sinks, he escapes on a life boat and is lost at sea with a dwindling number of animals until only he and a hungry Bengal tiger remain.

While Loki prepares his ship, Naglfar, to begin the final battle of Ragnarok, Magnus and his friends set sail to reach the vessel before it's ready, but angry sea gods and a fire-breathing dragon may prevent them from arriving in time.