Kemp (James Olson) is a former hero astronaut (the first man on Mars) but is now relegated to flying a worn out old ferry and salvaging broken satellites. He is hired by mega rich JJ Hubbard (Warren Mitchell) for a secret and fairly illegal job: force an asteroid that is basically a giant sapphire to crash on the Moon so it can be much easily mined. Kemp, in need of cash, carries this out.
But meanwhile Clem (Catherine Shell) has arrived on the Moon and also need Kemp's help to find her missing Moon miner brother. As he helps her he finds himself drawn into JJ Hubbard's darker and much more deadly plan...
This really is a great film, great fun and action from start to finish. The limited special effects do not detract from the story (and indeed were not that bad for the day anyway). Surely a film that can bring you Bernard Bresslaw as a hired thug in a spacesuit can only be great?!