It's Jolly Olde England, Henry VIII and Catherine of Aragon are on the throne, and royal marriages are made to strengthen political ties. Henry wants to cement an alliance with France by marrying his sister Mary to the aged King Louis XII, even though the spunky, flirtatious Mary has set her cap on Charles Brandon, a commoner. Henry prevails, of course, after promising that should Louis die, Mary can then wed anyone of her choosing. As luck would have it, Louis dies a mere two months later, she marries Brandon, and they live happily ever after.
While ignoring any distasteful details about Henry VII, this 1953 Disney drama tells a simple and basically true story and showcases the talented and über-perky Glynis Johns who plays the headstrong princess. She does a fine job, but Richard Todd is a stiff and bland Brandon. The movie clearly has a low budget and the sets look fake, but the costumes are pretty and the colors are vivid.
It's a simple, uncluttered tale that would make a pleasant introduction to the Tudors for children, adolescents and undemanding adults (like me). Pleasant, non-violent, and wholesomely romantic - everything that a good Disney movie should be.