Viking warriors led by Borgnine raid the English coast, raping and plundering. In one small kingdom, he kills the king and rapes the queen. The child who is born as a result of that assault grows up to be Curtis, a Viking slave who knows nothing of his parentage. He and Douglas, Borgnine's
legitimate son, take a dislike to each other and fight a duel, during which Curtis' falcon claws out one of Douglas' eyes. Enraged, Douglas orders the slave tossed into a pit of giant crabs. Curtis is saved when Donald, who was banished from England and is planning his return with Viking help,
recognizes an amulet Curtis wears which proclaims his true identity. On another raid, t...