There's a simple and very unique premise behind the Black Crab script. It goes like this: imagine a war action movie, only on ice skates. That might sound dumb, but somehow, the film's plot manages to find its sea legs (pun intended). It is set in an undefined post-apocalyptic Nordic state, where a group of soldiers has to deliver a powerful weapon behind enemy lines using frozen waters around it.
The Director of the film, Adam Berg, got his first shot at a feature-length movie with Black Crab. He did a commendable job, just like his leading lady, the very talented Noomi Rapace. But, there's something off with the film as well, akin to some form of stable, but still shoddily made hut. The ice skate gimmick grows old eventually. At the same time, there is hardly a way to connect with the characters and the ending ultimately fails to change any of that. That is why the same shoddy hut, like the film, doesn't fold immediately, but overall, ends up being a very forgettable sight.