Penny and her Great Aunt Busyboots decide to swap roles for the day so the queen can have a princess adventure and Penny can practice being queen.

When the seed silo breaks on the eve of their coronation, the princesses follow a riddle that sends them on a voyage to the Cave of Sparkleseed Secrets.

To catch the critter that's been eating all the ripe raspberries off the bushes at night, the princesses go on a royal "camp out stake out."