Fallen

It's said that an angel's blood can resurrect a person.The purer the blood, the more powerful the resurrection.

To find an angel is hard, but to get their blood is even harder.

Imogen and her sisters are down on Earth for a "trip". She's left with two other angels, one who wants to commit sin. They're ambushed and attacked by a vicious group of demon warriors who want their deity alive. They'll do anything for angel blood and they've got them. Three angels, two who are almost as pure as you can get.