When a person dies, by chance, they will be chosen by Project Alpha and be brought back to life. They will recall no memories of their death and is almost like the past has been changed. If successful, they will be given powers based on their death. The only downside is that they become a mechanical piece of code that magically exists in this world.
A group of friends naming themselves the Pack have been chosen by Project Alpha. Once they realize what's really going on they hunt them down and try to return their lives to normal.