Tunnel of darkness

It's not easy growing up in a world so cruel, where your nightmares are actually memories.
Tori Nevela is a 17 years old girl living in England, without her father. Suddenly hearing that she is an Angel does not make things better, for more secrets are being dug up.
Will she be able to save all the Angels including herself and prevent the world from being taken over by Demons? Or will she fail and shall the world darken?