Peachpai, also known as Arisu Shinohara, hails from a world of magic. Disguised as an idol singer, she finds herself drawn into the fierce competition for the powerful Legendary Pai tiles. Her primary combat ability involves transformation, a notoriously unstable process that grants her enhanced capabilities and connects her to others with similar metamorphic traits.

Despite her magical heritage, Peachpai is established as an untalented magical girl, hinting at deficiencies in her magical skill. This otherworldly origin further marks her as an outsider among the diverse group vying for the Pai.

Within the conflict, Peachpai teams up with four other female warriors: a bunny alien, a cyborg soldier, a dominatrix, and a transforming superhero. Together, they battle monstrous manifestations of the Legendary Pai. Defeating these monsters is key to collecting the tiles, which promise a wish if fully assembled. Consequently, Peachpai is drawn into clashes not only with the monsters themselves but also with rival factions seeking the same ultimate prize.