Haruka Haruno is a student at the Noble Academy boarding school, where she holds dear her aspiration to become a princess. One day, she meets two fairies from the Hope Kingdom, Pafu and Aroma, who are being pursued by monsters created by Dyspear. Dyspear aims to spread despair across the world by sealing dreams within the Gate of Desperation. The fairies present Haruka with a Princess Perfume, transforming her into Cure Flora. She is later joined by Minami Kaidou and Kirara Amanogawa, who become Cure Mermaid and Cure Twinkle respectively. Together, they form the Princess PreCure Team to gather the Dress-Up Keys required to unlock the Gate of Dreams, all while safeguarding people's dreams from the forces of Dys Dark.