Grizelda is determined to win the kingdom's first Great Rainbow Rally. But her self-centered driving throws the rest of the racers off course.

It's up to True to rid the kingdom of a horrible smell when the Rainbow King goes away on family business and makes her "Queen for a Day."

Grizelda commands the Grizmos to build the most dazzling tower in the kingdom. But they use so many crystals that her castle starts to sink.