Still in E-Space, Romana and the Doctor find a planet where the locals are kept in primitive ways by the three who rule--actually vampires, descendants of some of the Earth people that crashed here years ago. They have been made this way by one of the Great Vampires which fought the Time Lords eons ago. They are planning to kill Romana to revive him and Adric is to be made one of them. Adric, slipping by K-9 is not known to be aboard the Tardis by The Doctor and Romana. Adric pretends to go along with the vampires against Romana and the Doctor. The Doctor with help from the locals and K-9, attacks the castle and saves his friends. 22nd Century or the 36th Century, future of E Space, Hydrax ship has been there 1000 years.