From the back of the book: Four pre-teen brothers and sisters empowered with abilities to manipulate gravity, mass, inertia, and disintegration. The mandate handed to them by their unworldly mentor: Save the Earth from enemies both on and off the planet. Alex, Julie, Jack, and Katie Power are collectively known as POWER PACK! Inside this book, you will find detailed statistics of the Power kids throughout their growth into teenagers, their allies, family, and foes.