After a nuclear war, four warriors from Earth awaken on a space ship. Unable to determine what purpose they are there and, above all, who rescued them, panic breaks out. The young scientist Lee and his attractive colleague Susan face the killer aliens in a bitter struggle for the survival of mankind.

It is 2035 A.D. and the final countdown has begun for a voyage that will reach across the vastness of outer space - to explore the nearest Earth-Like planet. An international crew has been placed in cryogenic suspended animation for the journey. But a century later, they awake to find that things have gone horribly wrong.