The Doctor Who saga began on November 23, 1963, with the first episode of the four-part story arc known variously as "An Unearthly Child," "100,000 BC," and "The Tribe of Gum." Curious about their secretive pupil Susan (Carole Ann Ford), schoolteachers Ian Chesterson (William Russell) and Barbara Wright (Jacqueline Hill) follow her home. Stopping off at a junk yard, they meet Susan's grandfather, the Doctor (William Hartnell), who is able to travel in space and time with his marvelous machine, the TARDIS. Entering the machine, the two teachers join the Doctor on a journey back in time -- 100,000 years back, to the era of the Great Cold. Episode one of "An Unearthly Child" was written by Anthony Coburn.
by Hal Erickson synopsis