The Prophecy Of The Luna Queen

It has been thousands of years since the last elemental wolf. However, prophecy spoke of one returning to the earth to rid of the destruction that war was going to bring; that no one was prepared for.

At 8 years old, Tania(Nia) Michells lost her entire pack to an attack the rouges issued. Only her and her brother and friends made it out alive that night 10 years ago.
Dreci Is a newly found king with a dark past related to the war that is about enter on their pack lands.
With new people turning up and dark magic gathering at each corner, the war is coming closer everyday and it seems they don't have much time to prepare.

What is the caused of this war? What does it have to do with Nia and Dreci? How much can this newly mated couple take to win?