Isabel Leon, the star of a survival reality show, thinks she can endure anything. But when she unwittingly gives an unscrupulous mogul a chance to profit from her murder, she becomes the target of a terrifying killer who makes nature seem tame by comparison.

At first left for dead, she is rescued by a medical research team that operates outside the law. She awakens to find she's the living proof of a breakthrough that can change the world. Some people would pay any price to control it. Others would simply steal the secret--even if it costs Isabel's life. As powerful rivals pursue her, Isabel must risk everything to protect those she loves--or die again tomorrow.