Thunderbirds Are Go is a 1966 British science-fiction puppet film based on Thunderbirds, a Supermarionation television series created by Gerry and Sylvia Anderson and produced by their company Century 21 Productions. Written by the Andersons and directed by David Lane, Thunderbirds Are Go concerns spacecraft Zero-X and its human mission to Mars. When Zero-X suffers a malfunction during re-entry, it is up to life-saving organisation International Rescue, supported by its technologically-advanced Thunderbird machines, to activate the trapped crew's escape pod before the spacecraft hits the ground.
Filmed between March and June 1966 at Century 21's studios on the Slough Trading Estate and on location in Portugal, Thunderbirds Are Go features guest appearances by puppet versions of Cliff Richard and The Shadows, who also contributed to the film's score. It was the first film to be shot using an early form of video assist called "Add-a-Vision". The film's special effects sequences, directed by Derek Meddings, took six months to complete.
Although early reviews praised the film as a successful cinematic transfer of the TV series, Thunderbirds Are Go drew a lukewarm public response and proved to be a box office failure. Later reviews would criticise the film for its minimal characterisation, lengthy effects shots, and inclusion of a fantasy dream sequence centring on Richard and The Shadows. Surprised by the film's underperformance, and confident that Thunderbirds still had cinematic potential, distributors United Artists ordered a sequel, Thunderbird 6. However, this too received a mediocre critical and commercial response and caused the franchise to be abandoned until the early 2000s. Zero-X later appeared in the first episode of Captain Scarlet and the Mysterons, the Andersons' follow-up to Thunderbirds, while tie-in publication TV Century 21 ran a Zero-X comic strip until 1969.
Plot
In 2065, the first human mission to Mars is launched from Glenn Field in the form of the spacecraft Zero-X. Unknown to Captain Travers and his four-man crew, master criminal the Hood has stowed away on board to photograph Zero-Xs wing mechanism. Shortly after lift-off, the Hood inadvertently traps his foot in the craft's hydraulics, jamming them and causing Zero-X to go out of control. As the astronauts eject in the escape pod, the Hood extracts his crushed foot and parachutes to safety from the undercarriage. Zero-X crashes into the ocean and explodes.
In 2067, the Inquiry Board of the Space Exploration Center concludes that Zero-X was sabotaged. Meanwhile, a second Zero-X has been built and another mission to Mars planned. International Rescue agrees to provide security at the launch given the possibility of further sabotage. Jeff Tracy dispatches Scott to Glenn Field in Thunderbird 1 to monitor the situation from the ground, while Virgil and Alan are assigned to escort Zero-X through the atmosphere in Thunderbirds 2 and 3. Posing as a reporter at the pre-launch press conference, Lady Penelope arranges for each member of the crew to wear a St Christopher brooch with a concealed homing device. On launch day, Dr Grant's device is no longer registering, even though Grant is on board Zero-X awaiting lift-off. Scott unmasks "Grant" as the Hood in disguise. The Hood flees Glenn Field in a car, pursued by Penelope and Parker in FAB 1. Reaching the coast, he transfers to a speedboat and then a helicopter. Parker shoots down the helicopter with FAB 1's machine gun. Meanwhile, the kidnapped Grant is found and returned to Zero-X and the spacecraft is launched without further incident.
Mission complete, Penelope invites Scott and Virgil to join her at popular nightclub The Swinging Star. Returning to Tracy Island, Alan feels unappreciated when Jeff insists that he stay at base while the others spend the night partying. Asleep in bed, Alan has a surreal dream in which he and Penelope travel to another Swinging Star located in space. Appearing at the nightclub are Cliff Richard Jr and the Shadows, who perform a song called "Shooting Star" and an instrumental called "Lady Penelope". The dream ends when Alan falls out of The Swinging Star and back to Earth, waking to discover that he has merely fallen out of bed.