A tornado in the Black Hills of South Dakota has shattered Sarah Morningstar's young life. The 15-year-old Lakota Sioux finds herself the last surviving member of her family. Chosen by some seemingly mystical accident, she and three others her age from across the globe, become embroiled in a journey that will transform their young lives. The dangerous and action-filled mission they embark on will ultimately require them to make a choice: return to their previous lives or stand together and rescue the world from its current self-destructive path of fear, greed, and hatred.