A malfunction at a mining operation sends an asteroid careening towards the sun, endangering crewman Ned Tedford. Alan and Kayo deploy Thunderbird 3 for the rescue mission, but a rogue solar flare knocks out their sensors. They land near the mine, and must find a way to alter the asteroid's trajectory so that it slingshots around the sun instead of crashing into it.
Elenco: David Graham , Rasmus Hardiker , Kayvan Novak , Rosamund Pike , Thomas Brodie-Sangster , David Menkin , Angel Coulby , Chris Jarman , Adjoa Andoh , Jenna Coleman , Sandra Dickinson , Teresa Gallagher .