The Doctor is looking for hope. But instead, he finds himself on a mission. The Time Lords have uncovered terrifying fragments of an insane plot to destroy the universe. And somehow, at the centre of that plot is one, random female in Earth's history, Molly O'Sullivan. Part 1. The Great War. Nursing assistant Molly O'Sullivan spends her days facing the horrors of the Great War. Little does she know that a man from another world has arrived, looking for her. But what are the strange sounds coming from the battlefield at night? Part 2. With the first objective of his mission reached, nothing is going to plan for the Doctor. Molly O'Sullivan has escaped one conflict only to find herself in the thick of another. And what connects the Doctor, the Daleks and the Ides Scientific Institute? Part 3. Something happened when Molly O'Sullivan was just two years old, and the Doctor thinks it's high time they found out exactly what it was. As the Doctor and Molly get closer to the terrible truth, the nature of reality itself seems to be in question...Part 4. With Straxus and his TARDIS destroyed, the Doctor and Molly have tracked the mysterious X to the planet Srangor.
It is here that the truth of the threat to the universe will finally be revealed. What is the Dalek Time Controller's ultimate plan?