Petal Crash takes place in the land of Florea, a loosely-connected smattering of city-states where people of many different fantasy races coexist with one another. Though the land is divided, it's said that it was once a united and prosperous country, where the people enjoyed a lasting peace presided over by the seven Sacred Blossoms, relics of great power assembled in the Royal Garden. How Florea came to be divided is lost to history, and the legend of the scattered Sacred Blossoms has turned to myth: whoever finds all seven and returns them to the Royal Garden will receive their heart's true desire.

Eons later, the Sacred Blossoms have each fallen into the hands of a different individual: The fairy scholar Lilibri, the tiefling delinquent Strelitz, human tailor twins Penny & Deony, the dwarven treasure hunter Ore Kid, the beastkin freelancer Daize, the legendary centaur dancer Yosoti, and the errant elven knight Rosalia. Each of them has their own wish, and their own story to tell.