Cinderella (1950 film) overhears Cinderella humming the waltz played at the ball. Realizing that Cinderella is the mysterious girl, Lady Tremaine locks her in her attic bedroom. Later, the Duke arrives at the château, and Jaq and Gus steal the key from Lady Tremaine's dress pocket and take it up to the attic as Anastasia and Drizella unsuccessfully try on the slipper. Lady Tremaine's cat, Lucifer, ambushes the mice, but Bruno chases him out of the house, allowing the mice to free Cinderella. As the Duke is about to leave, Cinderella appears and asks to try on the slipper. Knowing it will fit,
Tillie and Gus determine who is awarded the franchise. Comic mayhem ensues when Gus does everything in his power to sabotage their rival, ultimately coming out ahead in the end. Tom tells Gus, "That ferryboat race was the world's biggest gamble," to which Gus replies, "Well, don't forget, Lady Godiva put everything she had on a horse!" In his review in "The New York Times", Mordaunt Hall described the film as "a cheery absurdity" and added, "Insane as are the doings in this concoction, they succeed in being really funny. It is the sort of thing admirably suited to Mr. Fields' peculiar genius."