The film begins with a criminal jagannath (Sheikh Mukhtar) being convicted in court offence. He has no lawyer to defense him so the judge ask him if he has anything to say on his behalf. He refuses to say anything, but his younger brother rajen ( Raj Kapoor) also him to say some thing otherwise he would break his vow. Jagannath then starts narrating his story and the film goes into flashback. Jagannath and rajen are two brother who have lost their parents and work for seth for a living. One day the seth finds an excuse to kick them out and kicks them out. To make their ends meet, the younger brother decided to becomes a thief, though the elder brother is a forthright, idealistic guy who refuses to follow his brother. One day a guy ask them to get him some out of the railway godown against which he would pay them money. When rajen goes to the godown, he is caught by the police and the two brother are separated. The elder brother also decided to enter the big bad world of crime. After this jagannath is shown to be a seasoned criminal who has made a fortune by robbing places and he leads a team now. He leads a dual life as his wife is totally unaware of her husband's profession. Jaganath steals a valuable necklace worth 12 lakh and the police want to catch the thief. Rajen is released from jail at the same time and he helps the police to track the thief the first time the two brothers meet in when rajen tries to pick the pocket of jagannath after coming out of jail through the two of them are unware of each others identity. Rajen sees a girl madhu ( Madhubala) and tries to impress heee impersonating raj kapoor for a while. Madhu's wicked wants to get hold of all her property and wants to get her married off, knowing which madhu runs away from home. She landa at the place where rajen and jagannath stay and all want to get hold of her uncle has announced a reward for anyone who might bring her home. Rajen gets hold of madhu and lands her over to tells jagannath who pays him rs 10000. She manages to free from jagannath's den ends lands up at his house while fleeing. When she tells jagannath wife the real identity of her husband. She refuses to believe her so she hatches a plan instead. She leads herselh to jagannath without his men having realised who they had taken to their boss. When both jagannath and his wife meet, they are equally shocked and his wife leaves him and decides to go away. She tries to commit suicide, but is saved by rajen rajen looks after her and becomes a motor mechanic, a changed man. Jagannath's wife who was pregnant gives birth to a boy. Madhu gets a false impression that rajen's wife is pregant and so she decides to see all her with him. She concentrates on her career end becomes a famous dances. One day when madhu is travelling in a car, her uncle chases her in a car and madhu's car hits raja, son of jaganath. Madhu talks raja away for treatment. When rajen comes to take raja back madhu comes to know the truth and things become normal between both of them. Meanwhile a party is organised by jaganath in honour of a well to do person from a place who is actually rajen in disguise. The police are there and arrest jaganath, rajen and ramlal sharma (madhu's uncle). All of them are released except jaganath who is imprisoned. Jagannath free from jail as he desparetly wants to see his son, but in the process gets shot by the police while coming across them. An injured jagannath alnds up at a place near to where rajen stays with jagannathwife and son. He comes across raja who looks after and lends to his injury. They spend some time together and develop a bond. Ramlal sharma appears there and there is a scuffle between jagannath and ramlal in which ramlal gets shots. The police also appear soon after and chases. Jagannath to a ta,, building under construction where jagannath climbs to the top with raja still in his possession. Rajen lefts him raja is jagannath's son and asks him to come down, but in rain. Jagannath only belevies rajen when he saws his wife ever then. Jagannath surrenders to the police and asks rajen never to tell raja;s father name. Ther one comeo to the present scene in the court ashere jagannath is convicted in court and before he goes to jail. Rajen asks raja to call jagannath "baba" once as he has been told that jagannath is yet to find his son. Jaganath goes to jail and the film ends.