During the reign of the Vikings, Kainan, a man from a far-off world, crash lands on Earth, bringing with him an alien predator known as the Moorwen. Though both man and monster are seeking revenge for violence committed against them, Kainan leads the alliance to kill the Moorwen by fusing his advanced technology with the Viking's Iron Age weaponry.
A stranger knocks on Didace his door. As he refuses to name himself, he is nicknamed the Survenant. Didace soon realized that this stranger, in addition to being a good worker, is a cheerful fellow who brings life to a house.