Beleaguered adventurer Carl Denham returns to the island where he found King Kong.

Erick, a young Viking warrior, joins forces with a rival clan in order to rescue a kidnapped princess from the great Midgard Serpent. It's a perilous task with a risk far greater than merely their own lives; by rescuing the princess, they might cause Ragnarök - the end of the world.

A group of Viking women build a ship and set off across the sea to locate their missing menfolk, only to fall into the clutches of the barbarian Grimolts who hold their men captive and worship the sea serpent which overturned their ship.

Julie and Tommy rescue a baby sea serpent and attempt to keep it safe and hidden from their father (a reporter for a tabloid) and a couple bumbling thieves until they can get it back to the ocean.