I was happy to get to see this movie in a sneak review, because I did not hear of it, and I probably wouldn't have watched it. We get a distrophy in which everyone lives underneath the earth, as the earth itself was attacked by aliens. Those are called "Nonsuchs" and one of the privates of the army, called S.U.M.1 is serving his duty on the surface; every army member has to serve 100 days on the surface and we follow S.U.M.1 in a movie that is mostly a one-man-show seeing what he is experiencing on the surface.

S.U.M.1 is played by Iwan Rheon (Ramsey from Game of Thrones) and is a German low budget movie, directed by a film professor from the SAE institute. This, at least to me, sounds like a great start. However, the low budget is pretty obvious, especially when it comes to the CGI, which looks like the cheap stuff we where used at the beginning of the 90s when watching TV shows. Even the first 3 minutes will make your toes curl.

However CGI is not everything, and the movie manges to build up tention a lot of time, while showing us one soldier serving his 100 days in solitude; however this puffes out unused. At the end, the movie is really long. Also some of the story elements are so obvious [spoiler](calling the guy S.U.M.1 = someone, and the aliens nonsuchs = no such (thing))[/spoiler]

A good idea, and good shooting overall, with a great actor and good soundtrack - but over all, it did not convince me. There are a number of plotholes, some of the things are never explained, other things only work because of coincidences, and a lot of background story is simply missing; they introduced a rat to whom S.U.M.1 starts talking - why not use this idea to give some background? Some flashbacks, or simply some naration of what exactly happend, how the live is under earth, etc.

I wouldn't watch this one in cinemas and I also wouldn't recommend paying money for the home release. Instead, if you are a really big fan of sci-fi movies, then wait for it, until it is shown on free TV.

Taking into consideration that it is a low budget movie, otherwise it would have gotten a worse rating.

[spoiler]
If you want to watch a movie that is really similar
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then you should rather watch 10 Cloverfield Lane. That one is pretty similar, especially also regarding the ending, and that is a movie wich is so much better.[/spoiler]