A sequel to 1966's Thunderbirds Are Go, it was the second film to be adapted from the 1960s television series Thunderbirds, which combined scale models and special effects with marionette puppet characters in a filming process that the Andersons termed "Supermarionation".
Intended to provide a lighter-hearted cinematic experience to contrast with the harder science of Thunderbirds Are Go, the Andersons elected to base the plot of Thunderbird 6 on Skyship One, a futuristic airship that is the latest project of the scientist Brains.
The Plot: The International Rescue team is faced with one of its toughest challenges yet, as the revolutionary lighter-than-air craft Skyship One is hijacked while on her maiden voyage around the world.
Against backdrops including the Statue of Liberty and the Sphinx, Lady Penelope, Parker, Alan and Tin-Tin fight the hijackers from on-board, while the rest of the team tries to stop the airship crashing into a missile silo.