"Dream big" is Louise the Big Cheese's motto. But try though she might, she's just plain old Louise, no Cheese. When the casting call goes out for Cinderella, Louise just knows that it's her moment to shine and take the stage as the STAR of the show. Unfortunately, the director casts Louise as a mouse while her best friend, Fern, who wasn't even going to try out in the first place, gets to be Cinderella. Louise may be a mouse in the show, but in the end it's up to her to save the day.