The Doctor, in his 14th incarnation, realizes that the universe is at its greatest peril. Its entire existence is threatened by an unknown being beyond space and time, who believes that its time should finally come to an end. He sees this universe, and many others, as a mistake and believes it should be undone. The Doctor, along with other Doctors from different universes, must come together to convince or stop this being from taking out the entire multiverse, and existence as we know it.
