 Dev Anand (Rajesh) is a simple and poor driver-cum-assistant to a rich boss (Abhi Bhattacharya) in Kolkata.He is hard pressed for money for his sister's wedding, when out of the blue a stranger offers him money in return for playing an impostor of a brother-in-law for a dying old man in Darjeeling who owns a palace and of course has millions worth of property.What seems like a simple task for Dev Anand who is in love with another rich girl (Asha Parekh) turns out to be a vicious trap, where he is caught red handed in front of a dead man, who is actually the owner of the palace, but not the one Dev had been meeting there till now.