This is the second book in a series about a nine-year-old boy with super powers. After nearly dying from an incurable illness, Jimmy is taken to a tropical island to recuperate. He meets a group of super powered kids led by a ruthless woman who they all call "Mama." Mama places Jimmy in charge, dubbing him Wohali. She plans to use Jimmy and the children to replace the inhabitants of Earth with a superior species of evolved humans.