The Fairytale World is facing a crisis as its princesses and corresponding realms are vanishing, disrupting the popular human tales they inspire. As a solution, the Queen dispatches three magical creatures - Sei, Dai, and Ryoku - to Earth with enchanted gemstones in search of three girls capable of becoming the "Super Miracle Idols": Snow White, Cinderella, and Kaguya-hime. Unexpectedly, Ringo Yukimori, Layla Takashiro, and Natsuki Sasahara, three young girls, are bestowed with the gems and transformed into illustrious singing sensations. Following an accidental debut at a Wish concert, they are dubbed the "Little Princesses" or "LilPri." For the sake of preserving their beloved world, they must gather Happiness Tones from people, which will restore the Fantasy Realm.