U.N.I.T. can’t decide whether to battle Global Warming, a flesh-eating virus, nuclear holocaust, dinosaurs or planet-usurping man-geckos.
Pertwee’s Third Doctor and Miss/Doctor Liz Shaw are persuaded to join Brigadier Alistair Gordon Lethbridge Stewart (aka “Bagels”) and investigate some happenings at a local nuclear power research facility, perched atop a labyrinth of caves. Recently, odd power cuts and multiple cases of loony tunes among the research staff have caught U.N.I.T.’s attention.
Could they be related to the fervent work ethic of the scientists. Or do they have anything to do with the race of lizard people living beneath them? Only The Doctor can solve the puzzle. Hilarity ensues.