It's Princess Bella's eighth birthday, and she is super excited! Not only does she get a whole day of sparkly celebrations, but she also gets a unicorn of her very own—a special gift only royals receive in Crystal Kingdom. But her two best friends, Ivy and Clara, are feeling a little left out. And when Bella tries to make them feel like princesses too, it turns into a fight that's bigger than her eight-layered birthday cake. Plus, Bella is worried she might not find her perfect unicorn match after all. Can Bella work her magic and still have the best birthday ever?