The first feature film inspired by the British television series "Thunderbirds" which was created by the husband-and-wife team of Sylvia and Gerry Anderson (Sylvia also supplied the voice of Lady Penelope). Utilizing sophisticated marionettes shot in a process called "Supermarionation,"
the Thunderbirds--a group of heroes in the 21st century--pilot their spaceships for an organization known as International Rescue. In this adventure, the Thunderbirds go to the rescue of the first manned space flight to Mars. When the astronauts arrive on Mars, they are faced with deadly Martian
rock serpents. The group manages to complete its mission but on the return flight their ...