While attending a dress ball held at an amusement park, the Pretty Cures discover that Coco and Nuts have disappeared and are attacked by a pair of brothers. After questioning them, it turns out the brothers have been manipulated by villains, and the "Mirror Kingdom" where they live has been taken over by "Shadow." Thus, the Pretty Cures bravely venture into the Mirror Kingdom to confront Shadow and the Dark Pretty Cures in a decisive battle. I'm Nozomi Yumehara! As a Pretty Cure, I'll do my best! My companions are my best friend, Rin-chan; the idol, Urara; and the wonderful seniors, Komachi-san and Karen-san. Though we're five different types of people, our hearts are one! With that, we wanted to become princesses! So, we headed to a Western-style theme park. We were enjoying the princess experience, wearing cute frilly dresses in a luxurious castle, when Coco and Nuts, dressed as nobles, appeared, causing a commotion all around! Since they're originally princes of the Palmier Kingdom, we were swooning over how different the real deal is~ when suddenly, Coco and Nuts were kidnapped into the Mirror Kingdom!! The culprits are Migirin and Hidarin from the Mirror Kingdom. Actually, they were being manipulated by a villain named Shadow. Shadow planned to steal the Dream Collet by using the Mirror Kingdom's precious treasure, the Crystal, and take over the world! We have to save Coco and Nuts quickly! However, on our way to the Mirror Kingdom, what appears before us but Pretty Cures who look exactly like us??? Hey~ wait, wait, wait~~! What in the world is going on, that we have to fight against Pretty Cures? Moreover, they are the strongest enemies, possessing both Shadow's power and Pretty Cure's power!! Pretty Cure, in a biiig, biiig, biiig pi~nch!!!