Doctor Who: The E-Space Trilogy - 3 movies

In "Doctor Who: The E-Space Trilogy" we find the Doctor lost in a parallel universe full of alarming new foes; the trilogy also serves as a farewell to one of the Doctor’s best-loved companions, Romana (Lalla Ward) and an introduction to one of his most controversial, the teenaged Adric (Matthew Waterhouse). The TARDIS enters the alternate universe--known as Exo-Space or E-Space in 1980’s Full Circle, which finds the Doctor and Romana charting a course for their home planet of Gallifrey but instead finding themselves on the planet Alzarius, where a small band of humanoids find conflict within their number as well as from menacing, reptilian Marshmen. One of the humanoids, a teenager named Adric, stows away aboard the TARDIS and accompanies the Doctor to a new planet in State of Decay; there, they discover a medieval-like society in the grip of three lords who demand sacrifice from the population.