he princess (Minnie) is to wed the Prince (Goofy, still known as Dippy Dawg) against her wishes. When she refuses, her father the king locks her in the tower. Minstrel Mickey sees her and rescues her, making a rope from the clothes of lady-in-waiting Clarabell. The king spots them and prepares to chop off Mickey's head until Minnie intercedes. The king calls for a joust. Mickey wins, and they live happily ever after.

Overview from themoviedb.org