Situation: Critical (Thunderbirds)

John Tracy, the third of Jeff Tracy's sons, coordinates communications for International Rescue on the space satellite Thunderbird 5, in addition to piloting the rocket ship Thunderbird 3 and assisting with Earth-based rescues. An experienced astronomer, John discovers a new system and realizes its gravity has sent meteors and comets hurtling toward Earth. John and the rest of the International Rescue team find that this is only the beginning of the disasters they must handle, which affect them as well as the rest of the world. Can they save the Earth, and themselves, from catastrophe?