Starring Sylvester McCoy as the seventh Doctor, with Bonnie Langford as Mel and Sophie Aldred as Ace. The Doctor, Ace, and Mel are caught in a forever night. After crossing the threshold, a strange world awaits them. An army of tortured souls. A lift that leads to an alien landscape. An alien warlord, left for dead, and willing to do anything to prolong his life. It's all in a day's work for the Doctor. But when his companions become victims of the desperate and powerful Arkallax, the Doctor will have to do battle in a psychic environment where he must make a choice. Save his companions or himself.