Honestly, I've seen plenty of offbeat art films where there is no concrete plot and the movie is really about the angst and emotions of the characters. But even then, I expect something to happen. I expect to see some character development, some questions answered, some conclusions.
This film offers none of those. It is 90 minutes of some kids rambling around after the mysterious death of one of their friends. We never know what they think, how they feel, or how the events affect them. We never know what to think of their parents, or the dead boy's father.
I'm sorry, there is just no plot, no story, not even a thread of one, to hold this thing together. Count how many times one of the characters answers a question, "I don't know" in this film. Every question is answered this way, so you can't form any opinions about any of the characters.
I'll leave you with one final thought. The way the scenes cut from one to the next, with no connective tissue between them, they could be shown in almost any order and it wouldn't make any difference.