A alien ship is sighted approaching the sun, creating massive climate changes across the Earth. The Thunderbirds prepare to intercept the UFO, and face the ultimate challenge: the unknown.
Two boys, enthralled by the Thunderbirds, sneak away from a school trip to International Rescue and try to pilot TB-1. It doesn't take long before things go wrong.
The Thunderbirds encounter an alien monolith near Neptune, who subjects them to a trial to determine the worth of the human race.
The Thunderbirds must race to save the occupants of an experimental out-of-control spacecraft which is speeding towards Jupiter.
The Thunderbirds clear up a toxic spill near a wildlife marina, with the help of an intelligent dolphin named Crusader.
The Thunderbirds must stop Star Crusher from taking over the Nitroid Space Colony and transforming its residents into cyborgs.
The solar system's largest company, Asteroid Mines Inc., has suffered a series of sabotages on its mining ships carrying the rare material cryolite. The Thunderbirds are sent to investigate and uncover a plot to take over the company itself.
A jumbo aircraft liner, the Thunderbolt, is suddenly disabled and the Thunderbirds must race against time to land it safely.
Moonbase Omega must be evacuated due to toxic alien vapors. But a resident goes wild when she discovers a crystal that grants psychic powers.
The Thunderbirds head to a space station near Mars, where an experiment gone haywire has created a giant monster plant.
When massive hurricanes and typhoons break out in the South Pacific islands, the Thunderbirds race to evacuate its residents.
A computer goes rogue and takes over its Vancouver complex. The Thunderbirds must stop it as well as save the lives of the complex's residents.
The Thunderbirds investigate the reappearance of the Guardian, an exploratory spacecraft that disappeared ninety years ago.
The Thunderbirds must cope with a double crisis: they must disable a malfunctioning missile system, and rescue a spacecraft that is drifting into space.
The Thunderbirds face off with the Shadow Axis over the testing of a newly-designed ion engine, which the Shadow Axis plots to steal.
The Thunderbirds celebrate their first year as a team, but also have their first encounter with the entity known as Star Crusher.
The first commercial underwater thermoelectric plant is built on a source of intense geothermal energy... which turns out to be a fault line.
A new member of the Thunderbirds must overcome his fear of failure and agoraphobia when his father is trapped aboard a drifting space station.
A research spacecraft sent to analyze the Sun starts to malfunction from prolonged exposure to solar radiation, endangering its crew.
The Thunderbirds take on a riot of criminals who broke out of a penitentiary.
In the Alps, a monorail is trapped under an avalanche on the eve of a severe storm, and with air running out for the passengers the Thunderbirds must work fast.
A fire breaks out in the Rocky Mountains, endangering all wildlife there. To make matters worse, one of the Thunderbirds is having a breakdown from family troubles.
The lunar colony Moonbase Omega is in peril when its computer goes berserk and imprisons all the residents.
The Thunderbirds disobey orders and head out into space to aid a close friend who's trapped aboard the space station Rosinante with a critical reactor.
