Stream the full Thunderbirds Are Go! Season 1 Episode 21 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
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.