The PreCure (Pretty Cure) were legendary fighters who protected the earth from evil. Their true identities were two ordinary junior high school students, Hyuuga Saki (日向咲) and Mishou Mai (美翔舞).

They used their magical cell phones and two little cards called diamonds to transform into Cure Bloom (キュアブルーム) and Cure Egret (キュアイーグレット). The girls cannot transform by themselves. They need to be together (along with both Frappi and Choppi) to trigger the transformation.

The PreCure's attack was PreCure Twin Stream Splash. For this attack, the two girls both hold hands. Bloom calls on the power from the fairies of the land, and Egret calls on the power from the fairies of the sky. They let out blasts that surrounds the uzaina monster. The monster reverts back to it's original form, and the fairies that were trapped inside the monster get released. Then a little ball, called kiseki no shizuku, falls out of the sky.

In episode 30, Saki and Mai got new items and a new transformation, into Cure Bright and Cure Windy.