The fairy mascots from across the entire Precure franchise have transformed into miniature versions of themselves called PetitCure, and a huge gathering is taking place at the Mysterious Amusement Park, a magical realm where anything can come true. Within this park, the fairies spend their time eating sweets, riding attractions, and playing together in their own unique ways. A central narrative conceit is that all of their human Precure partners are in good-night mode, effectively asleep or resting, which allows the fairies to have complete freedom to enjoy themselves without supervision. However, the official synopsis teases that something mysterious is also happening within the park, hinting at a gentle, low-stakes conflict or secret for viewers to uncover.

The series is structured as a collection of very short, standalone episodes that focus on slice-of-life antics and cute interactions rather than traditional magical battles. The original cast of PetitCure includes Mofurun, a kind plush doll who loves sweet smells; Pollun, a spoiled but well-meaning fairy prince; Komugi, an energetic puppy; Yuki, a calm and independent cat; Kururun, a laid-back and lazy seal; Fuwa, a天真 gluttonous fairy who falls asleep after eating; Coco and Nuts, two fairy princes from Palmier Kingdom with a love for cream puffs and bean jam buns respectively; Syrup, a flying fairy who struggles to be honest about his kind nature; Tsubasa, a hardworking bird-like fairy; Puff, a serene rabbit fairy; and Hummy, an overly cheerful and clumsy cat fairy.

The initial season covers 27 episodes that aired weekly from April to September 2025. A second season began broadcasting shortly after the first concluded, introducing new PetitCure characters such as Niko, a deity-like figure; Memu and Memu, energetic rice fairies; Miru, a trainee butler; and the twin fairies Maple and Mipuru. A third season premiered in March 2026, expanding the setting to include new locations like a performance stage and Candy Paradise. Each episode runs approximately one minute, features no spoken dialogue from the characters, and is produced by the animation studio IKIF+ with music by Rina Tayama.