If you just retrospect and wonder into into childhood, you will recollect some of your wildest fantasies. I was fascinated about truck drivers job, coconut tree climber and wished of becoming a truck driver, then I was struck by reality and I became engineer. Not that I regret :D. My brother wanted to be a bus conductor and wanted to have "Sudarshan Chakra", for this he gave up eating non-veg just for this, later he realized.
This movie reminded me of "Good old days" which was filled with fascination about random things. The protagonist of the movie young child and his friend were bored of studies and exams. They gave name to their teachers ( :D , typical of high school), sing random songs (check out a aa e song video). This child was always confused because his mother always gives him studying, drinking milk is necessary condition for growing up.
Child was staying with his sister and was missing his mother, his sister was always out of home. that was the reason for the clashes between his bro-in-law and sister.
He decided to run away from home and go to his mother. On way he meets lots of uneducated people who are living in penury and hardship. Like railway driver who misses his lover (Dhanno), blind-begger, lady who died at railway station. This is where reality struck the dream world of you boy.
He takes the decision of continuing his decision.