This is the story of a joint family living in a big house, though they do not live together in harmony. Noone wants to take care of the house which includes cooking, cleaning, washing etc Shivnath Sharma (Harindranath Chattopadhyay), the owner of the house has three sons, Ramnath (A. K. Hangal), Kashinath, and Vishwanath (Asrani). They live together as a family, and are in the need of a cook. One day Raghu (Rajesh Khanna) enters their house as a cook.
Raghu helps all the members of the family by making them happy, helping them in every way. He also helps Krishna (Jaya Bhaduri), by teaching her dance and helping her get the 1st prize for it. He also helps in making Krishna find her life partner. In the end the love among all the family members grows strong. and each member starts understanding his/ her responsibility.
Will Raghu stay on in the family or is his task done?