A great Pretty Cure gathering! Or so we thought. They've actually been separated~!? Where am I...? --When Sora wakes up, she finds herself in a mysterious world... It seems that she has lost Mashiro and the others.... But there she meets Yui, Manatsu, and Prim! What's more, Prim transforms into Cure Supreme! Mashiro meets Laura, Amane, and Nodoka on a small island in the sea, and rescues Puka from a monster attack! Tsubasa meets Saaya, Ha-chan, and Haruka, where they take a walk in the hanging garden! Ageha meets Asumi, Lala and Yukari, but Lala and Yukari are having trouble getting along! They meet a lot of friends, but for some reason, their memories are all a little hazy... And it seems that the only people in this world are Precure...? We want to go back to our own world! The clue is a castle in the distance-- Onward! Our journey begins here! Let's go on a great adventure to the castle! (Source: Official Site, translated)

Tsubomi Hanasaki is woken by her best friend Erika Kurumi only to find out that their two fairies, Coffret and Shypre, have left just leaving a note explaining where to find them. Fairy Park is not only the destination of both girls, it is also the meeting point of all other Precures who planned to spend this special day together. This magical theme park holds the Rainbow Jewel, a special gem that represents all of the hopes and dreams of the world. Such a powerful stone is the object of desire of a malefic entity named Bottom who has waited one thousand years for the opportunity to possess it.

Stride—an extreme sport that combines parkour, free running, relay, and sprinting—is what made first year high school student Nana Sakurai enroll in Honan Academy, after being captivated by the school's stride team. Sharing the mutual intention of joining the team is fellow first year and stride maniac, Takeru Fujiwara, and together they request to join. Much to their dismay, however, the stride club is no longer active due to lack of members, and they are now operating under the shogi club. In order to revive the stride club, Nana and Takeru recruit first year Riku Yagami—a fast runner who is interested in almost every sport. With this new team, the club now aims high at a new goal: to win the prestigious End of Summer competition, and bring the Honan stride team back to their prime.

An ancient legend tells of a magical Powerstone that granted its owner any wish desired. Adventurers from all over the globe clash as they seek this mystical gem. Based upon the Dreamcast game, POWERSTONE tries to entertain us with the story behind the game's premise. The plot begins with our hero, Fokker, training to be a fighter like his idol, Vargas. (Source: AniDB)