Mr Parimal Tripathy (Dharmendra) a Botany professor, who falls in love with Sulekha (Sharmila Tagore) and soon ties the knot with her. Parimal loves playing pranks. On other hand, Sulekha, idolizes her Jijaji and considers him to be the most intelligent & smart person she has ever come across. Parimal develops a plan to fool Sulekha's smart Jijaji Raghavendra . Parimal learns from somewhere that Jijaji in search of a driver who can speak good unadulterated Hindi. Parimal goes to Jijaji, pretending to be a driver named Pyaremohan Illahabadi, who is very talkative and completely hates English language. Parimal & Sulekha then start playing pranks, one after another on the poor hapless Jijaji. The very first prank, is that they pretend that Sulekha is not happy with her marriage & then it is revealed that Sulekha is having an affair with Pyaremohan. Parimal even convinves his long time friend Prof. Sukumar Sinha (Amitabh Bachchan) who is a professor of English literature, to act as Parimal. Jijaji who is now completely irritated by Parimal & Sulekha's behaviour loses his cool when learns that Sukumar aka Parimal, is falling for Vasudha (Jaya Bhaduri). In the end sukumar marries Vasudha, and on the very wedding day Pyaremohan reveals his true identity. Jijaji admits finally that he can also make mistakes . The film is one of the most remembered, entertaining comedy movies of yester years.