Aliens have killed everyone on the planet except 6 people who find a way to fight back. This is one of those incredibly bad sci-fi films made on a very small budget that is watchable because of that. The fact that the aline is a man in gorilla suit with a diving helmet and a bubble machine at the entrance to his cave sums up the film. There are all sorts of logic problems and the script and dialogue are bad. There is however a good musical score by Elmer Bernstein.
1/5 
George Nader