Watch Cybermaster: Shepherd II (1999) Official Trailer

The continuing saga of Dakota, Lilith and gang center on the idea that the Earth surface may be habitable again. Miles, determind not to lose control of the underground cities decides to launch the last orbiting nuclear weapons to assure that Earth's surface remains unihabitable, forcing the populations to stay underground where he is the master of all things. All Dakota has to do is stop him.