It's the year 1990 and scientists receive a distress call from an alien spaceship that has crash-landed on Mars. Dr Farraday (Rathbone) decides to send a team of astronauts, including Allan Brenner (Saxon) and Paul Grant (Hopper), on a rescue mission. On the planet, they discover just one survivor. This green-skinned alien is brought aboard, but when one man is attacked and drained of his blood, the survivors are soon racing home, before they too become victim to the bloodsucker.
