She woke up one day - beaten and near death - with no memory whatsoever. Now, 16-year-old Anna Tucker is beginning life anew with her adopted family in rural Nebraska, but dealing with crushes and bullies in school is the least of her problems. When she begins to experience mysterious spasms that demonstrate unnatural abilities, Anna soon finds herself in the crossfire of a relentless government organization whose deadly soldiers will stop at nothing to find her, and the truth of her past and her powers may finally reveal itself - ordinary teenage girl, or super-advanced killing machine?