That's some solid scriptwriting right there, going straight into the action from the start. Mostly, these kind of movies start with much dialogue and go in detail with the exposition but no they went right to the conflict and started the journey right away. Exhibiting that they really have something to say and not simply using some origin story to make money. I also like how they made you feel the weight of what's at stake and how they kept the tension all through out, it was a very good watch.