It all began with nine. Nine aliens who left their home planet of Lorien when it fell under attack by the evil Mogadorians, who scattered on Earth and went into hiding, who look like ordinary teenagers, but who have extraordinary skills. The Mogadorians killed Number One, Number Two, and Number Three. They tried to kill Number Four...and failed.
Number Four (aka John Smith) has now teamed up with Number Nine, while Six has gone off to find the others. With the Mogadorians hot on their trail and time running out, they must find a way to come together before it's too late. Their power is in numbers.