When a happy meeting between friends takes a dark turn, The mane 6 are left with one question in mind, what was Discord's history? Unable to answer it, the ponies go to the sisters to learn of their friend's traumatizing origins
Twilight Sparkle, Princess Luna, and Princess Celestia all have a strange dream which is hosted by none other than Discord's father who has some surprises about the Alicorns and Draconequi to share with them.