A spaceship hurtles out of control towards a boiling sun with the Doctor and Martha trapped on board. They have only 42 minutes to uncover the saboteurs, but, with a mysterious force starting to possess the crew, they had better work quickly.
Can a team from BBC daytime soap Doctors, featuring Chris Walker, Matthew Chambers, Sarah Moyle, Ian Midlane and Elisabeth Dermot Walsh triumph over the general knowledge goliaths and win the cash prize for their charity?
