The Princess, with Bona's help, builds a toy car out of boxes in the playroom before zooming off to a fantasy racetrack. There, the Princess and Bona, in one car, race against the Prince and his plush Cat in another. Mid-race, they deploy an array of wild gadgets against each other, causing both cars to malfunction just shy of the finish line! What now? The children decide to team up: they lift the finish tape and carry it back to their cars, finishing the race together and sharing the victory as dual champions.