Hyuuga Saki and Mishou Mai meet in the forest after following strange lights. Five years later they reunite under the Sky Tree, where they meet Flappy and Choppy, two spirits from the Land of Fountains; they have fled from Akudaikaan, the evil ruler of Dark Fall, who has taken over six of the seven fountains that protect the life-giving World Tree. They give Saki and Mai the power to transform into Pretty Cure, so they can fight Akudaikaan's minions and restore the fountains.

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Same setting: Futari wa Precure
Side story: Eiga Futari wa Precure Splash Star: Tick Tack Kiki Ippatsu!
Alternative version: Eiga Precure All Stars DX: Minna Tomodachi - Kiseki no Zen'in Daishuugou!
Side story: Futari wa Precure Splash Star: Maji Doki 3D Theater
Other: Chou Tanpen Precure All Stars Go Go Dream Live!
Sequel: Kibou no Chikara: Otona Precure '23