Raja, a middle-class man in Bombay, and his friend Ashok arrange Laaj's marriage to Ravi, an orphan. Ravi disappears, and Raja refuses to marry Madhu, hiding a secret.

A diamond thief hides his loot on an innocent child, but the child turns out to be an adult posing as a youngster to purchase a half-priced train ticket. Now, the thief will have to outwit the eccentric in a series of wacky misadventures.

Inspector Shankar (Biswajeet) is assigned to investigate the mysterious death of Sunder Singh (Sujit Kumar). During this process, he meets a beautiful young and rich heiress named Sheil (Mala Sinha), who has an impaired memory, and is being looked after by Sunder Singh's aunt (Nirupa Roy). He falls in love with Sheila. Sheila confides in Shankar that she thinks she is haunted by a scarred-faced ma...