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 as the dalek tries to find a place for itself in a world that is completely antithetical to its former existence and way of thinking...

...and why does that earth pony stallion look familiar...?

Twilight Sparkle is tasked with writing an ethnography of Fluffy Ponies by Princess Celestia, who is concerned for their well being. Luckily, Fluffle Puff is already living at the library with Twilight, so she has a head start on this challenging assignment.