When dangerous situations exceed the limitations or ordinary military and international security forces, the world calls upon the high-tech assistance of International Rescue--a mysterious band of fearless adventurers and their fleet of awesome, imaginatively engineered vehicles known as: Thunderbirds! Hidden from the world, Tracy Island, a lush patch of land situated in the remote waters of the South Pacific, is home to brilliant entrepreneur and former astronaut Jeff Tracy (Paxton) and his five sons. It is also the headquarters of Tracy's top-secret organization, International Rescue - and it is under siege. Master criminal The Hood (Kingsley) has breached island security, intent on commandeering International Rescue's fleet of five highly advanced rescue vehicles, each designed to accomplish a specific task. Deploying Jeff and his four eldest sons on a mission, The Hood finds his plans obstructed by Jeff's youngest son Alan (Corbet), who will do anything to save the Tracy family and the Thunderbirds.