At first I thought the film was too narrow but then I found it very tense and so the narrowness came into focus. This is a Swedish film so, to me, it was a plus. There's no hype about it or in it. Six people have been commanded to deliver a secret item to their comrades on an island. They need to skate 100 miles to get their destination because the ice is so thin. There is no mention why the item couldn't be flown to the destination so that part was just the drama that binds you to watching the film. You want to know what is going to happen because of the ice skating. The film has a moral dilemma to it and that's the best part. We learn that in that world there really are no good guys. That idea hit home for me because it reflects our world today.