A space explorer is on a collison course with the sun after becoming lost.
A team of astronauts makes a daring attempt to capture a piece of the sun, but become trapped on a collision course when their retro rockets fail. A rescue attempt by Thunderbird 3 goes terribly wrong when, after triggering Sun Probe’s rockets by remote control, the sun’s blazing heat causes the failure of the International Rescue craft’s own retros. To transmit the remote signal to the doomed spaceship, Thunderbird 2 must battle a blinding snowstorm to reach a key transmission point.