A human soul is stuffed into King Sombra's body. Having no idea what's going on, and thinking he is in some kind of coma, he just casually strolls into the Crystal Empire.
This is the story of Elric Faelan, a Stable 132 resident and the fate that befalls him when his home is destroyed by a unknown force and he uncovers a dark secret that shakes the very foundation of his reality and world.
Nightmare Moon banished Celestia, only to be defeated by Ahuizotl. Ponykind were made the scapegoats to blame for her scourge. 1000 years they pray for a saviour to deliver them. Anypony will do. Enter the last hope, a pizza delivery dude.
Luna was sealed. Inside a boy. In an unlikely partnership, Luna offers the boy a summoning contract to help him in his upcoming ninja exams. She forgets to tell him what it summons. The boy didn't care to ask. Instant recipe for disaster.
Being the host of the Darkness is hard, especially so when you're sent into a world of mythical beings with no way return, by the help (sarcasm) of a certain angelus-possessed girl.