In the beginning they were a group of nine aliens who left their home planet of Lorien when it fell under attack by the evil Mogadorians. Nine garde who scattered on Earth. Nine garde who look like ordinary teenagers living ordinary lives, but who have extraordinary, paranormal legacies. The Nine had to separate and go into hiding.
The Mogadorian caught Number One in Malaysia, Number Two in England, and Number Three in Kenya. All of them were killed. John Smith, of Paradise, Ohio, is Number Four. He knows that he is next.