While Christmas preparations are underway at both Tracy Island and a local children's hospital, which is expanding to incorporate a new radiotherapy wing, a pair of criminals attempt to burgle a high-tech vault storing gold bullion.
A malfunctioning solar reflector menaces the Italian coastal village of Monte Bianco, where Lady Penelope and Parker happen to be visiting while on holiday.
The passenger aircraft Skythrust, conceived by Brains using his real name (Hiram Hackenbacker) as an alias, falls into the hands of fashion criminals who hi-jack the plane to steal a new French design from the renowned François Lemaire.
Thunderbirds is a 1960s British science-fiction television series which was produced using a mixed method of marionette puppetry and scale-model special effects termed "Supermarionation". The series is set in the 21st century and follows the exploits of International Rescue, a secret organization formed to save people in mortal danger with the help of technologically advanced land, sea, air and space vehicles and equipment, launched from a hidden base on Tracy Island in the South Pacific Ocean.