A team of soldiers must stop a giant, bloodthirsty crocodile from reaching a nearby city, while trying to avoid being a meal for the beast themselves.

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.