Fossi is new at school, and at first Ignis, Terri, Kai, Windy, and Sunny aren’t sure they want to be his friends. Soon, however, they discover that by working together they can overcome even the toughest of challenges, and that everyone has an important role to play in saving the planet.


The Big Switch is the second book in the Our Hidden Powers series, where friends Sunny, Windy, Kai, Ignis, and Terri teach us how renewable energy can save the planet.