Tales of the TARDIS and Pyramids of Mars

In 1911 (the year in the movie not the year when the movie was filmed) the Fourth Doctor and Sarah Jane discover an ancient and powerful evil on the verge of escaping its prison. Do you think that they can stop it before it brings death to all humanity…? The humans are still alive to watch the Doctor Who show and alive play in another episodes and we should better find out how they succeded.