This movie is the debut of writer and director Lukas Bossuyt.
Two scientists discover a way to send back messages to the past. Although they don't really stress the scientific point of view, it's still has a lot of credibility and you don't feel like you're in a science fiction movie. They soon realize they can't take advantage of their discovery.
However they try to change what went wrong in the past so it could benefit themselves. Things didn't work out the way they planned. The end is unexpected, not the typical happy ending.
I personally really liked the movie. You have to keep focus though because there is one character who is presumed to be older than what he looks like in the movie (Tom should be 25 years older). The movie is shot in Leuven, a city well known for its college students. The music goes well with it. Certainly a recommendation, nevertheless it's regrettable that they didn't recast "older Tom".