Queen Chrysalis accidentally Reformed, and now needs a vacation to sort things out. Ocellus and Smolder are summoned by the Cutie Map to solve a friendship problem. Surely these two things are unrelated. Surely.
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...