Princesses Allie, Mellie, and Libby are very busy at their rose covered palace by the sea. Princess Allie bakes the best cakes you've ever had. Princess Libby is an expert at building things. And Princess Mellie can grow almost anything in her garden.But the princesses are tired of being the best at just one thing. So when it's time to prepare for the Summer Party, the princesses decide to switch places! Allie will build the chairs, Mellie will bake the cupcakes, and Libby will grow berries in the garden. After all, princesses are good at everything. . . . right?