Twilight summons a powerful and disaffected five thousand year old demon, me. Because I cannot put footnotes into this description, this description is bereft of any further insights into my awesome tale. Yours ironically, Bartimaeus.

Shining Armor and Mi Amore Cadenza have just been united in marital bliss. Princess Celestia has determined that it is time for Twilight to learn some things that she herself has never admitted learning to anypony else. Love without passion, hope without basis, power without strength; these are the things that Celestia shall give to Twilight with the greatest story never yet told: that of her own history before being ruler of all Equestria.