Really good story and maybe not that unrealistic. Of course it is putting things to a point which is somewhat unrealistic, but our planet is under pressure from they way we exploit it, and one way of controlling might be depicted here. I hope it will not come to that thought!
The movie has a great lead actor Noomi Rapace. She really pulls off all seven roles and manages to add some diversity to all of them.
The villain, played by Glenn Close, is really great as well, she actually looks like an evil person.
If you like dystopian and slightly political sci-fi movies this one i absolutely recommendable.