While stopping by in Ponyville, the Doctor and Ditzy get a surprise visit from someone, or now, somepony from the past. But is the Doctor all that is in trouble, or is it something deeper?

Lyra was always known as the mentally unstable one, but not to the extent where ponies had to worry. However, as the days pass, Ponyville starts to notice that Lyra becomes more and more insane, ranting louder about creatures known as "humans".

The Dazzlings are sick of being trapped in the human world, and after hundreds of year have passed, get desperate to take it over. (WARNING: MINOR RAINBOW ROCKS SPOILERS)