Source

Discord's chaos was supposed to end once he was imprisoned in stone again. However, one act he did before taking on the Mane 6 had corrupted every unborn foal. Now, with Pound and Pumpkin Cake living with a bit of Discord inside of them, they seek balance. This balance can only be obtained one way, and it involves the sacrifice of their greatest friend, Pinkie Pie, whether she knows it or not.

Edited by Icky

Cover art from My Little Pony: Friendship is Magic