When he stumbles upon a Martian's plot to ignite World War III, FBI agent Nate Tanner must defy orders to get to the truth. Determined to stop a ruthless undercover invader from taking Earth to the brink of oblivion, Tanner engages in a deadly game of cat-and-mouse to unravel alien's diabolical plans. With the help of a daring and beautiful reporter with secrets of her own, Nate will race against the clock to outwit a monster from outer space and save the world from total annihilation!