A mad cultist decides that the best time to fulfil a forgotten prophecy and open a portal to the interdimensional void is now. As he himself is unable to do so, he requires the aid of somepony more magical. And he knows just the pony for the job..

The Crystal Heart blesses the Crystal Empire with warmth and constant spring. However, during the Equestria Games, the Crystal Ponies grow so exhilerated its warming magic reaches farther out than ever before. And beneath the ice, something awakens.

When Twilight trades her friends' lives for the princesses' magic, she decides that Discord has not earned forgiveness.