In this science-fiction action opus, intergalactic extremist Alex Windham has seized control of Dome 4, a scientific outpost on another planet, after escaping from a penal colony on Mars. Windham is forcing the staff of Dome 4 to construct new weapons that he can use to destroy his enemies, but what he doesn't know is that one of his captives is the wife of interstellar lawman Chase Moran.