The story of the movie is really powerful and reflect the reality of life. Basically it is a mixture of four stories. 1) Old Age, 2) Relationship between poor and rich and 3) How rich escape incidents, 4) How children leave old parents behind and if I can add No.5 that would be 5) How things haunt you in life.
The character of Dad and Mom was very powerful. How cheerful and happy their life is. But their children left them and settled at different places.