Butterfly effect: The scientific theory that a single occurrence, no matter how small, can change the course of the universe forever. Jamie and Will, bunking off school to go hunting. Kuni, trapped in an icy crevasse. Shelton, on a deadly mission for revenge. Bakili, under attack from bloodthirsty baboons. Tina, piloting flight 492 to Moscow. For them, and many others, things will never be the same again. Some will live. Many will die. All are connected. A heart-stopping adventure that will leave readers breathless.