Laci scores 53% in some kind of intelligence test, which means that he stays in the guardianship of his uncle. He is rather disappointed; not because of the guardianship, but because he would have liked to achieve 70%.
Bianka is very bright, but would probably score way below 53% in any kind of emotional intelligence test. Being bored, she decides to kidnap a ~2-month old baby; having nowhere to go, she gets him involved, and so their weird journey begins.
There are many things you may like about this movie. Most of the cast consists of amateur actors (including the two leads), and they do a great job. Most of them play characters that are probably quite close to what and who they are in real life, but they do it in a very natural and authentic way. The guys in some of the minor roles (like Laci's roommate in the workers' dormitory) are great. The scenes shot in the grey outskirts of Budapest (in pubs, the workers' dormitory, construction sites etc.), are both funny and realistic. Many lines are also quite funny; I laughed a lot despite the fact that the movie is rather melancholic. The melancholy is also an element that I personally really liked in it, although it can be frustrating for others. The camerawork is excellent.
These kind of stories, they never end well; and you know it in the beginning. Although most of us are not borderline personalities, and we definitely don't kidnap 2-month old babies, our pursuit of happiness is just as pointless and illusionary, as the actions of the protagonists. I guess this is the final point of the movie, but it doesn't end on an entirely low note. She meets someone whom she doesn't always feel the urge to dump lies on; and he gets to make some pretty mature decisions. It's not bad from someone who was officially declared incapable of making decisions and acting in his own interests.