A kingdom's ascending heir, marked for assassination, switches identities with a lookalike, who takes his place at the coronation. When the real king is kidnapped, his followers try to find him, while the stand-in falls in love with the king's intended bride, the beautiful Princess Flavia.
The Prisoner of Zenda is a 1937 American black-and-white adventure film based on Anthony Hope's 1894 novel and the 1896 play. A lookalike impersonates his royal distant relative when the royal is kidnapped to prevent his coronation. This version is widely considered the best of the many film adaptations of the novel and play.