The film takes place in 12th-century England, where Count Thibault Malefète is about to marry Princess Rosalind, the daughter of the reigning King Henry. At the wedding banquet, an enemy known as the Earl of Warwick accidentally gives Thibault a potion which makes him hallucinate (and which was actually intended for Rosalind by a witch hired by the Earl), and under its influence, he kills his own bride Princess Rosalind believing she is a ferocious monster. While under sentence of death, he asks his servant, André Le Paté to find a wizard to help him. The wizard gives him a potion that will send him back to the moment before he killed Princess Rosalind. The wizard botches the spell, and instead, Thibault and André are sent into the 21st century.