The necron are a race of demonic beings. They are involved in an eternal war with the omicron. The omicron are a race of angelic beings. The necron must win the war because if they do, the universe will become Hell.
The necron cannot be noticed because they appear to be no different from anybody else. But one difference is that they can remember all of their past lifes
Every necron has a unique demonic ability of their own which they use to fight against the omicron. This is the story of a group necron stationed on earth.