The Fresh Pretty Cure! team: Love, Miki and Inori, head to the dance contest being held in Minato Mirai 21 in Yokohama, but suddenly attacked by a creature named Fusion, formed by remnants of the Zakennas, Uzainas, Kowainas, and Hoshinas. They transform and fight the creature, but the monster leaves in the middle of a fight as they lack power. In Palmier Kingdom, as the fairies Coco and Nutts explains the usage of the Rainbow Miracle Lights, Tart bursts in and tries to warn them about Fusion, but realizes that it followed him to the castle. In a frantic chaos, they all run away and end up separated from one another. Lulun falls from the sky, and meets the Yes! PreCure 5 GoGo! team: Nozomi, Rin, Urara, Komachi, Karen and Kurumi, who realizes that she was being chased by a fragment of Fusion, they transform and fight. However, it absorbs their attacks and runs off. Moop and Foop ends up with the Futari wa Pretty Cure Max Heart team: Nagisa, Honoka, and Hikari, where the same thing happens to them as Fusion absorbs their attacks, and later with the Futari wa Pretty Cure Splash Star team: Saki and Mai, as they're protecting Coco, Nutts, and Syrup. Meanwhile, Love and the others tries to search for Chiffon, who've gone missing. The fragments of Fusion reunites in the sky, and spreads the darkness around the city. As Cures Peach, Berry and Pine demands Fusion where it took Chiffon, it fights and overpowers them, and traps the Cures in a pool of darkness. Determined to reunite the fairies to their respective partners, the Max Heart, Splash Star and Yes! 5 teams makes their way to the city and fights off their respective monsters. As the Fresh team pulls themselves out of the pool, a light shatters the dark dome and the three notice the three Pretty Cure teams surrounding them. Angered, Fusion turns into a gigantic monster and attacks them. Refusing to give up, the Pretty Cures engage him in a long fight, but Fusion overpowers them. Just then, Chiffon appears with the Rainbow Miracle Lights and sends to every mascot. With its power, the Cures combine their attacks and destroy Fusion, restoring the city back to normal. Later at the dance competition, Love, Miki and Inori nervously dance and fails as the other girls are watching them, but accepts their slip-ups.