When a blue box containing a mysterious pony lands in Ditzy's yard, she calls for the Elements. But the more she speaks with this "Doctor," the more convinced she is that they've met already.
With the Mane 6 split across time and space, both sets of the mares, along with Spike and the CMC in one half along with Discord, Trixie, Starlight and the Doctor in the other.
The Doctor and company come across an abandoned theatre, where the stage productions show alternative fates of the worst varieties. Meanwhile, another group go to the Badlands where, along the way, Trixie reveals a secret...
A dalek appears in Equestria - not just any dalek, but the one that had been corrupted by Rose Tyler's DNA. It has a choice of life as a pony, or dying, and finds that it cannot bear to die a second time. Thus begins a strange adventure...
Starlight Glimmer is about to get her revenge on Twilight and her friends, she just has to stop that cyan pegasus from doing her rainbow trick. But before doing so, she receives a visit from a Doctor.
Death sends the Tenth Doctor somewhere he never could have expected. With new friends to make and ancient foes from two universes to fight, only one thing is certain: there's an awful lot of running left to do.
