During the reign of the Vikings, Kainan (James Caviezel from The Passion of the Christ), a man from a far-off world, crash lands on Earth, bringing with him an alien predator known as the Moorwen. Man and monster both seeking revenge for violence committed against them. As the Moorwen ravages the Viking world, killing everything in its path, Kainan forms an unlikely alliance with the primitive but fierce warriors. Combining his advanced technology with ancient Iron Age weapons, the hero leads a desperate attempt to kill the monster - before it destroys them all.