Sanjay (Rajendra Kumar) is a simple tourist guide, who lives in Darjeeling with his childhood friend Hanuman (Rajendra Nath). When Sanjay meets Priya (Saira Bano), who has come on a tour with her friends, he falls madly in love with her. She also reciprocates his love. She is suddenly called back to Calcutta as her father is put in prison on falls charges, by his Boss T.K. (Ranjendra Kumar) & his brother Prem (Prem Chopra ). When Sanjay is returning after leaving Priya at the airport his jeep meets with an accident & he dies. When he is taken to heaven he requests the God there to send him back to earth as his lady love Priya would be heart broken. Chitragupt who maintains the death record of human beings finds that Sanjay has died by mistake in place of someone else. By the time they come to put back life into his body the body is cremated. So the Gods tell him that he can go back to Earth by entering the body of T.K. whom Priya hates. Meanwhile Priya is accused of killing T.K. and to save her Sanjay enter T.K.'s body . He later finds that T.K. had many vices like women, gambling, drinking etc. He feels very miserable & out of place in T.K.'s body. He contacts his friend Hanuman & explains the situation to him. Priya misunderstands Sanjay to be T.K. & hates him. He is very hurt. Sanjay meets T.K.'s grandmother who helps him find peace in life by donating his wealth to the poor & needy. She approaches Priya's father for Sanjay's marriage & Priya accpets the proposal but T.K.'s secretary Rita who he had married secretly blackmails Sanjay. Priya come to Rita's house where Rita is murdered by T.K.'s brother, Prem but Priya is wrongly framed. T.K. i.e. Sanjay finds that Prem is the culprit & hands him over to the police & marries Priya.