Synopsis
The Doctor and his companions use guile and cunning to escape death at the hands of their Stone Age captors. The Doctor decides that the only way to escape is to show the cave dwellers how to make fire.
Similar broadcast resources

S1E3: An Unearthly Child: The Forest of Fear | Doctor Who (1963-1996)
The Doctor and crew leave the TARDIS to explore their new surroundings, but are soon captured, thrown in a cave and threatened with death. They only have the secret of fire to bargain with.

S1E2: An Unearthly Child: The Cave of Skulls | Doctor Who (1963-1996)
Ian and Barbara are aboard the TARDIS uninvited. The Doctor ignores Susan's pleas to let them go. The TARDIS takes off and travels back to Stone Age times, where the crew make the mistake of venturing outside.