After a kickass show at the Wacken Open Air metal festival, Amon Amarth come into possession of a strange book. What lies in store for these vikings, and Thora Hammersparks?

So there's this pony. Shadow. He's different. His dark magic is cold, ancient, and forbidden. Now that's what we know, but the real adventure lies in what is still a mystery. Will he be able to learn to live a new life in Ponyville? What happens when two hearts start to beat with a synchronized pulse? All this and more in the great and powerful tale that lies within!