Discovering a girl under his bed isn't the strangest thing happening to Spencer. The real shock comes when he finds out who she is and why she's on Earth. Mandy, an extraterrestrial girl, has been hiding out ever since the jet she stowed away on crashed in the desert behind his home. When the pilot is captured by the Air Force, Mandy is left lost and alone. She asks Spencer to risk everything to rescue the pilot from Edwards Air Force Base and help them get back home with the one thing their civilization needs to survive. On the run from soldiers, fighter jets and attack helicopters, Spencer and his family fall into crisis when they find out what it is that Mandy and the pilot have really come to Earth for.