His Royal Highness

Football star Jack Christie accompanies his college roommate Victor Borden to France, where the latter becomes attached to gangster's daughter Lisette. He is injured trying to save her from a forced marriage, and while he is confined in a hospital, he reveals to Jack that he is actually Prince of Wallarya, a small country in the Balkans. Because Prince Ferdinand, who wishes to seize the throne, has convinced the King of Terresta to declare war on Wallarya, Jack agrees to take Victor's place temporarily at the head of the army. Posing as the prince, Jack foils Ferdinand's attempts to assassinate him and then prevents war by agreeing to marry the king of Terresta's daughter Diana. Victor wires Jack that he plans to settle permanently in America with Lisette, leaving the football hero to rule Wallarya with his bride.

Directed by Carlyle Blackwell, His Royal Highness leans on a strong ensemble — Carlyle Blackwell, Evelyn Greeley, Kate Lester — to carry a story that balances spectacle with character.

The film landed with audiences for its craft and performances, and remains one of the most talked-about adventure titles of 1918.