内容简介：
When Sarah sets off on a long ride to exercise her horse, Jake, little does she realise she may never see her parents again Kidnapped by an alien she has tried to help, she discovers he intends to commit the biggest theft in America's history. Trying to warn the U.S. of the danger, she is confronted by a tiger, is almost electrocuted by robots, and gets fired at by army tanks. Will she ever see her parents again?