In the 22nd century, the Daleks have occupied planet Earth. From the 43rd hundred years, only a handful of human beings survive. Still further into the distant future, a Thal scientist must select whether to betray his history, or start to see the universe destroyed. When the Doctor and Nyssa end up trapped with this dangerous chain of occasions, they need to decide who their real enemies are. What’s certain, however, is normally that no matter where the Doctor transforms… his arch enemies, the Daleks, will end up being looking forward to him. What could possibly be worse than that? The Mutant Phase…