Many incarnations of the Doctors and their old companions are taken out of time and deposited in the Death Zone on Gallifrey. There, they must battle the Master, Daleks, Cybermen and Yeti in order to reach the Dark Tower and discover the Tomb of Rassilon.
The Missing Years was a documentary containing footage from missing episodes of Doctor Who from William Hartnell's and Patrick Troughton's time as the Doctor. Presented by Frazer Hines and Deborah Watling, it was released on home video by BBC Video in 1998 and contained footage from several episodes.
