Teaming With The Enemy

There is a hidden world within our own. This world contains the myths and legends we hear of, but almost never get to experience for ourselves. All of the myths have truth in them, but they are not the complete story. The hidden world is that of the weres, half human and half animal, vampires, bloodsuckers of the night, angels, who help defeat pure evils in the world, monsters, that terrify mankind and often seek to destroy it, and many others. This world most certainly doesn't get along.
2 children from separate packs are the perfect weapons, made to either destroy the world or bring it to balance.
Both the Hollowstar Clan and the Bloodrose Pack are located in (State/City), in the USA, and are allied packs in 2012. As the Bloodrose pack is in agony over their lost pack member in 2002, and 10 years later are just beginning to forgive the Hollowstar Clan, who is responsible for the death, the monsters are gathering up their numbers for the biggest war in history. All will be lost if the 2 most powerful people don't join together to defeat the evil ascending upon them.