In a world full of brilliant heroes, it’s the trust of fans that turns heroes into superheroes. If a hero loses the people’s trust, they lose their special abilities. Trust value is collected, quantified, and used to determine a hero’s ranking, displayed on their wrist. Every two years, the top heroes go to a tournament to fight, determine new trust values, and earn their rankings.

A major incident has occurred in the peaceful Sky Land!? The young Princess Eru has been kidnapped by the monsters of Underground Empire. A brave young girl, Sora, follows the princess through a mysterious hole. "TV"? "Cars"? Are those some kind of magic tools!?!? But there's no time to be surprised. She has to get the princess back to the castle.... Flying between two worlds. The adventure with the Pretty Cure begins now. It's hero time.