Teachers Ian and Barbara follow Wunderkind pupil Susan to a junkyard, where they meet her grandfather, The Doctor.
In the beginning, there was a junkyard, and in that junkyard stood a Tardis. But we’re not there yet.
Teachers Ian and Barbara are bewildered by Wunderkind pupil, Susan “Foreman”, who’s great at science but not hip to chronology. Not thinking it creepy at all, they decide to stalk Susan to the junkyard where she allegedly lives with her grandfather… whom they meet and who turns out to be The Doctor. He kidnaps said teachers in his time machine, transporting them back in time to caveman days and refusing to bring them back home.
That’s right; he’s a bastard.
The Doctor disembarks the TARDIS, wanting to take some scientific samples and also to smoke his pipe, but in the process manages to get kidnapped himself – by a caveman no less, who believes the Doctor’s matches to be some sort of fire-making witchcraft that will allow him to take control of his tribe.
While looking for the abducted Doctor, the rest of the group are kidnapped (once again – this time by cavemen as well) and the whole troupe is held captive in “The Cave of Skulls”. Madness ensues.
PS: Pipes are cool.
(The Ratings and Reviews of this Doctor Who story kick in at the 34m45s mark.)