For a factory worker named Douglas Quaid, even though he's got a beautiful wife who he loves, the mind-trip sounds like the perfect vacation from his frustrating life - real memories of life as a super-spy might be just what he needs. But when the procedure goes horribly wrong, Quaid becomes a hunted man as he finds himself on the run from the police.

Two years after the Martian invasion, George Herbert's worst fears are realized: The Aliens have returned. As a second wave of Martian walkers lay waste to what's left of Earth, an alliance of military forces prepares a daring attack on the Red Planet itself. Once again, the future of mankind hangs in the balance.