The Prisoner of Zenda

On the eve of his coronation, King Rudolf V of Ruritania is drugged and kidnapped by his younger half-brother and held in the town of Zenda. Luckily his cousin, Rudolf Rassendyll, looks enough like the king to impersonate him until a more permanent solution can be found. Rudolf doesn’t want to stay king forever, though. That leaves him with a single choice: to help break his cousin out and put him on the throne.