A vampire moves in next door to a kid who's being bullied in school. He's lonely, she's lonely, and they're both 12 years old (she's been 12 for a long time). He accepts her without question, but then he doesn't know about her familiar, or whatever he is, who goes around killing people and draining their blood for her. Just why is never explained (or I missed it). Maybe she doesn't want to get caught, but this guy is the most inept serial killer in history if the two examples in the film are anything to go by. Could be he's just starting out, I guess. She doesn't mind killing when the occasion calls for it.
The less said about the rest of the film, the better. I wouldn't want to spoil it for you. Let's just say that things go wrong, young love blooms, and it's not bad to have a vampire on your side.
I liked the quiet horror of this movie. This is no "show me the entrails!" gorefest, but it's certainly scary at times. I have a feeling the upcoming U. S. remake will be a lot bloodier, louder, and faster. And less effective. I'd say see this version instead. It's not a standard vampire movie in any sense, more of a coming-of-age story, and well worth the time.
Here's a problem, though. Should a vampire's breath condense in the cold air? Do vampires even breathe? Much is made about how cold she is, how she goes out into the freezing snow without shoes or jacket. The condensing breath just seemed wrong to me. But what do I know?