After the release of the sealed Phantom Empire by the mystical box Axia, the Precure rise as defenders against the malevolent intruders. Among them is Hime Shirayuki, also known as Cure Princess, who hails from the kingdom where Axia was safeguarded. Despite her valiant efforts, Hime's shy nature impedes her effectiveness in battling the Empire's monsters. Seeking a partner to enhance her prowess, Hime crosses paths with the cheerful Megumi Aino. When a Phantom Empire general threatens their world, Hime's struggle prompts Megumi to unveil her own powers as Cure Lovely. Together, as the dynamic duo of Happiness Charge Precure, they embark on a quest not only to protect humanity but also to explore the depths of love.