When scientists attempt to revert people back to their natural born states to see if they are born naturally good or bad, a young girl's life is turned upside down. With the world thrown into apocalyptic turmoil, 16-year-old Hannah, along with her two younger sisters, become separated from their parents. They must brave Earth's transformed population in an effort to reunite their family. With danger at every turn, survival becomes Hannah's sole focus. Struggling to determine whether each person she meets is good or evil, she must also discover how she herself has been slated.