The fairies from across the Pretty Cure series have gathered at a mysterious amusement park where anything can come true, transformed into tiny, chibi-like versions of themselves called PetitCure. This park serves as a magical hub where beloved mascot characters from past seasons can meet, play, and relax away from their usual duties. The fairies spend their time enjoying simple pleasures, such as eating sweets, riding amusement park attractions, and interacting with one another in a carefree environment. However, amidst the fun, strange and unexplained events begin to occur, adding a layer of gentle mystery to their daily adventures.

The series features a wide ensemble of characters, each retaining core personality traits from their original appearances. Mofurun is gentle and loves sweet smells, acting as a connecting presence among the group. Pollun is a somewhat spoiled fairy prince who can be relied upon in a pinch. Komugi is energetic and loves to move her body, while her companion Shiroyuki is calm, independent, and enjoys relaxing in the sun. Kururun is laid-back and often rolls around, sometimes causing small troubles. Other notable fairies include Fuwa, a天真单纯 glutton who gets sleepy after eating; Coco and Nuts, princes who love cream puffs and bean jam buns respectively; Syrup, who is kind but tsundere and skilled at flying; Tsubasa, a hardworking fairy; Puff, elegant and proud of her long ears; and Hummy, a cheerful and optimistic character who considers herself reliable despite being clumsy.

The narrative unfolds in very short episodes, typically lasting between thirty seconds and ninety seconds, and is presented without voice acting, relying instead on visual storytelling and music. The animation is produced by studio IKIF+ and directed by Yuuko Okumura, with series composition by Momoka Toyoda. While the tone is predominantly lighthearted and focused on cute, slice-of-life interactions, the setting of a wish-granting amusement park allows for imaginative scenarios. There are hints that the Precure companions are in a "good-night mode," leaving the fairies to their own devices, and the "PetitCure" forms themselves are meant to provide a comforting, healing experience for viewers. The series is structured around weekly stories that showcase the fairies’ distinct personalities as they navigate both the joys and small mysteries of their new environment.