AllMovie

In this science-fiction action opus, intergalactic terrorist Alex Windham (Bruce Campbell) 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 (Joseph Culp) -- and Moran will allow no harm to come to his wife. Assault on Dome 4 also stars Brion James and Jack Nance.