Under the starlit sky, Hikaru's encounter with extraterrestrial beings - Lala, Prunce, and Fuwa - unravels a cosmic tale. The fabled 'Star Palace' and its protectors, the 12 Star Princesses, lie at the heart of the universe's equilibrium, shattered by a malevolent force. Prompted by Lala's quest, Hikaru embarks on a mission to locate the scattered 'Princess Star Color Pens' with the aid of the legendary Precure warriors. When Fuwa faces peril, Hikaru's earnest wish sparks a transformation, granting her the mantle of Cure Star. Now tasked with recovering the pens and nurturing Fuwa, the linchpin to the princesses' restoration, Hikaru embraces her newfound destiny.