Devious wizard Lodac abducts Princess Helene. Young Sir George vows to rescue the fair maiden and win her heart in the process. George, who apprentices for a bumbling witch, nabs an enchanted sword from his boss's collection and makes off for Lodac's lair...

After a gentlewoman is found dead with her throat torn out, the villagers blame a supernatural monster. But Sherlock Holmes, who gets drawn into the case from nearby Quebec, suspects a human murderer.