The film is about a young teen who lives with her parents and older brother. Whether the drugs have made the brother violent, made it more pronounced or he was just a violent thug before he began using, it's obvious that there is a serious problem in the home. However, the parents seem to be ignoring the fact that the boy is bullying his sister and making everyone's life pretty miserable. It all comes to a head when the father learns that the boy has been stealing from them. Like a bully or drug addict, the boy responds at first with lies, then extreme violence towards the dad. Eventually, the youngest is forced to react to stop the violence one way or another.
This film is a pretty good film as it clearly illustrates how violence and drugs can destroy lives--yet it does not come off as preachy or fake. Very good film making.