Aliens have been sighted on and around Earth for centuries. But a single description keeps popping up in history. Four legs, big eyes, and a unique mark on the hind legs. The first real proof was in April of 1945, from the German camp of Buchenwald.  Ever since then the report has been repeated every five years. But now one has been captured alive, and an old  secret base has been re-purposed to hold them. People were right about aliens, but they got three things wrong. They're from a lot further than just another world, they walk on four legs, and they don't go to area 51.

Note: This story goes much further than just "Ponies are really aliens!" (that's not actually it AT ALL.) I made a very detailed explanation of all the science fiction behind this story, which will be revealed as the story progresses. In other words, I went full nerd on this thing.

Insanity is roughly defined as the violation of normal social actions due to a mental illness, handicap, or disorder. This is why I call them liars. I am not violent, I am not dangerous, and I am not insane. I am perfectly healthy, I am fairly knowledgeable and intelligent, yet they lock me in a cell and call me mad.

Necromancy is a form of magic that involves raising the dead, usually for an evil or unnatural purpose. This is not the story of an evil necromancer, but the Memoirs of one Renovator Caesorum, a name that, in the oldest of pony languages, means Raiser of Fallen. He invented great spells in an attempt to understand the afterlife, something that nopony has done since. History has forgotten him, but his book is found and translated by Twilight Sparkle, who quickly becomes surprised at his experiments.

Rainbow Dash has a terrible dream about Scootaloo.

(based on a dream I had once.)