A rich businessman, Dayashankar Kumar, who is a widower, lives with his two young sons Ashok and Raj. When he catches the younger boy Raj stealing money, he punishes him and threatens to cut off his fingers. A frightened Raj runs away from home. Years pass and the older brother Ashok, becomes the owner of his father's business and property, running Superior Motors, which also extends to Bombay. Ashok is married to Laxmi and is a caring and loving husband. They have a young son, Munna.

Ashok goes on business to Bombay to meet his branch manager Bulbul. He comes in contact with a young woman, Sangeeta and is soon involved in an affair with her, intending to marry her. On his return home, Laxmi finds him changed and is shocked when he decides to sell his entire business and move to Bombay. He tells her that he's leaving and gives Laxmi some money. Laxmi takes her son and follows her husband to Bombay, but both get lost in the big city.

Raj, the younger brother, now called Raja, had reached Bombay making his living as a pickpocket. He stays with a street dancer Rani and her mentor, Baba. Rani tries to get Raja to give up his thieving habits and is in love with him. Laxmi and Munna accidentally meet Raja who gives them shelter. With Raja's help, Laxmi finds Ashok, but is upset when she discovers him living with Sangeeta. Soon it's exposed that Sangeeta is the wife of Bulbul, who is a rogue and wanted to get money off Ashok. Laxmi and Munna are reunited with a repentant Ashok. Their joy is doubled when they find that Raja is Ashok's younger brother.