No pun intended - world war 2 ... but this is more about never work with kids and/or animals. And both are being used here. Well I reckon German filmmakers never got the memo. Just kidding of course. We have two kids trying to survive and trying to get from point a to point b - well you know what I mean.
The movie is quite predictable - that said, it is not about that, if you want to watch it, it is about the adventure. I have no idea if there is a real story or real characters that are being used here ... that does not matter either. This has class and it has a really good cinematography. Just be aware of what this is and what it tries to convey and you'll be good.
