After seeing a boy billionaire ask for a specific railway car, Cruella tries to get rich quick by stealing the one on the Dearlys' farm. However, the pups and the Colonel attempt to prevent Cruella from getting her hands on it, causing them to embark on a wild mountain chase.
- The title is a play on the phrase: "No pain, no gain."
- The boy billionaire is named Billie Fences, who made his fortune in computers. This is most likely an homage to Bill Gates, one of the co-founders of Microsoft software.