Cult icons John Saxon, Dennis Hopper and the legendary Basil Rathbone star in this sci-fi cult classic! In the distant future, scientists receive a distress call from an alien spaceship that has crash-landed on Mars. Dr. Farraday (Rathbone, Tales of Terror) decides to send a team of astronauts, including Allan Brenner (Saxon, Enter the Dragon) and Paul Grant (Hopper, Easy Rider), on a rescue mission. On the planet, they discover a sole survivor: a green-skinned female alien (Florence Marly, Dr. Death Seeker Of Souls). The seductive alien is brought aboard their ship, but soon the horror begins after one man is attacked and dies, drained of his blood. The Queen of Blood is thirsty for more human victims, and as the astronauts try to find their way back to Earth and safety, the Queen's bloodlust has just begun.