During the 14th century, the Hundred-Year War between France and England ends in a truce. The English army occupies French Aquitaine, but rebel French knights vow to continue the war and oust Prince Edward of Wales, English ruler of French Aquitaine. Prince Edward of Wales is the son of King Edward III of England and he also is the heir to the English throne. The rebel French knights resent his presence in French Aquitaine and they plot to kill the Prince. When their plot fails, they kidnap his consort, Lady Joan Holland. Desperate, Prince Edward rides to her aid disguised in black armor in order to conceal his identity. After a series of valiant adventures, Edward the Black Prince and his troops do one more climactic battle against the French rebel army.

In prison and awaiting execution, Dr. Victor Frankenstein recounts to a priest what led him to his current circumstance. He inherited his family's wealth after the death of his mother when he was still only a young man. He hired Paul Krempe as his tutor and he immediately developed an interest in medical science. After several years, he and Krempe became equals and he developed an interest in the origins and nature of life. After successfully re-animating a dead dog, Victor sets about constructing a man using body parts he acquires for the purpose including the hands of a pianist and the brain of a renowned scholar. As Frankenstein's excesses continue to grow, Krempe is not only repulsed by what his friend has done but is concerned for the safety of the beautiful Elizabeth, Victor's cousin and fiancée who has come to live with them. His experiments lead to tragedy and his eventual demise.

Two Scottish friends become local folk heroes and tourist attractions when they start holding up tour busses with novelty items.