Italian director Mario Bava took a brief hiatus from horror films to make this fairly interesting Viking-themed adventure. Iron (Cameron Mitchell) is a Viking leader whose long-lost brother Erik (Giorgio Ardisson) was raised by Queen Alice of England. Alice's counselor, Gunnar (Andrea Checchi) betrays her and helps the Vikings take over, while the shipwrecked Erik is nursed back to health by Rama (Alice Kessleri), the twin sister of Iron's wife Daja (Ellen Kessleri). Naturally, Erik returns home and must fight Iron and defeat Gunnar in order to save the country. It doesn't quite work out that way, however, as the ruthless counselor kills Iron, leading the Vikings and British to join forces with Erik and take Gunnar down.
by Robert Firsching synopsis