One day, an enigmatic pony named Burke arrives in Ponyville He happens across the Cutie Mark Crusaders, and promises them their cutie marks in return for their assistance. Hijinks ensue. *Not related to Fallout Equestria*
Apple Bloom wants to see her parents, the Cutie Mark Crusaders want their cutie marks, so they do the the only logical thing and try to raise the dead.
The only thing standing between a trio of insatiably curious fillies and Equestria's absolute quasi-thermonuclear auto-annihilation is Twilight's idea of operational security. Between you and me? I don't think Equestria has a freakin' chance.
Ever wonder what the Cutie Mark Crusaders' collective juvee incident file looks like? Well, nopony has the strength to reproduce several thousand pages, so a few excerpts will have to do... if your sanity can survive it.