Rajesh Mehta, a person who lives his life on his own terms, is forced to leave home seeing the agony build up in his daughter-in-law. The story takes a turn when widower Rajesh Mehta elopes the old age home with Sharmila, a 60-year-old lady. This old couple has become a sensation and are the talk of the town.
"KAKA KO KUCH KUCH HOTA HAI" is a laughter ride proving that love can blossom even at an old age between Rajesh and Sharmila and the problems his family has to face in the society, trying to accept their father's love.