It is 2060 and once again Halley's Comet is passing close to Earth. A businessman and his personal assistant fly up to chase the comet but end up sending out a distress call. Alan and Scott have to rescue them in Thunderbird 3.
In the 21st century, Jeff Tracy, a former astronaut, amasses a colossal fortune and decides that he must use it to benefit others. His answer to this desire is to create International Rescue, a unique private emergency response service equipped with customized designed vehicles and equipment that enable the organization to react to any crisis whether it be in sea, air, land, or space.
Jeff's five sons volunteer to operate as the pilots and field agents, as well "Brain" who acts as the teams engineer. In addition, Jeff's friend, Kyrano and his daughter Tanusha aka Kayo agree to be the support staff. In addition to the field team, IR also maintains an intelligence network with Lady Penelope and her ex-con chauffeur, Parker as the chief agents in this arm.