Mana Aida, a student council president always eager to help others, is visiting the Clover Tower on a school orientation trip when a Jikochuu, a monster born from a person's selfish desires, attacks. The fairy Sharuru lends Mana her power, and Mana transforms into Cure Heart. Sharuru is one of the fairies who fled the Trump Kingdom after the Jikochuu overran it and its ruler, Princess Marie Ange, went missing, and they are searching Earth for girls who can become Pretty Cure. Mana's friends Rikka Hishikawa and Alice Yotsuba are soon drawn in. This manga adapts the anime series of the same name.