Middle‑school student Mana Aida is celebrated for her fierce enthusiasm and generous spirit, especially by classmates Rikka Hishikawa and Alice Yotsuba. During a school excursion, alien foes from the "Trump Kingdom" emerge and conjure colossal beasts fueled by the selfish cravings of ordinary people, wreaking havoc. Their presence turns the town into a battlefield of chaos, leaving the students terrified yet determined to protect their community against the relentless onslaught and preserve hope.
While searching for a way to halt the mayhem, Mana meets "Cure Sword," an enigmatic Precure fighter. As Cure Sword battles the monsters, Mana encounters her fairy companions, who reveal that she too can become a warrior. When the Trump Kingdom forces outnumber Cure Sword, Mana steps onto the battlefield with determination. She allies with Sharuru, one of the fairies, and transforms into "Cure Heart," the Precure of Love.
In trying to join forces with Cure Sword, Mana draws Rikka and Alice into the conflict; each partners with a fairy to become "Cure Diamond" and "Cure Rosetta," respectively. Together, they confront the Trump Kingdom invaders to safeguard love from annihilation.
Toei Animation Japan