Parichay is the story of Rai Saheb (Pran) who is strict disciplinarian. Although, he does appear to be tough from the exterior, he is a soft person inside. His son Nilesh (Sanjeev Kumar) gets married against his wishes, thus enraging Rai Saheb. Rai Saheb then asks Nilesh to start a new life with his wife on his own. For this, Rai Saheb is also willing to offer help to his son, who refuses, Nilesh has five children, the eldest being Rama (Jaya Bhaduri) The family leads a hand to mouth existence. Nilesh's wife dies and he also has blood cancer. In desperation, worried about what will happen to his children after him, Nilesh writes to his father. By the time, Rai Saheb receives the letter and visits his son, Nilesh is no more. Rai Saheb then decides to take the children with him, over to his place. The children are in no mood to study and also hate their grandfather. Rai Saheb tries to hire a number of tutors for the children, but their mischievious pranks somehow send the tutors packing. This is when, Ravi (Jeetendra) an unemployed youth, is offered the teachers job. He takes it up, only to find that the kids are always upto some prank or the other. Ravi manages to win over the love of the children, and also falls in love with Rama. Does Raisaheeb accept this relationship? Do the kids come close to Rai Saheb? This is what Parichay is all about.