Cinderella's clock is broken, and she needs to know what time it is, so she won’t be late for the ball. Abby zaps Nina and Rudy into the clock and they see that a nut that holds a gear is loose. This is a problem! Nina, Abby, and Rudy wonder what tool they can use to tighten the nut. What if they tape the wrench and cotton swab together to reach and tighten it? It works! They fix Cinderella’s clock in time for the ball.