At high level of abstraction it hypothetically explores existentialism with an intriguing set - a troubled teen with 3 grown-ups in their 30s.
The movie came out though resembles a piece of random thought (or remote memory) of the storyteller's youth - it's like the saying that when you look back at a certain age, the problem that seemed once so big would be found incredibly silly and irrelevant.
And I felt exactly that way getting out of the theater - why was I even there seeing the movie in the 1st place?