Meena and Mahesh Kapoor are madly in love with each other. One day, both of them get intimate and Meena becomes pregnant. Mahesh marries Malti Rai (Nanda), who belongs to a good family. Meena gives birth to a little boy and takes the baby to his father. Mahesh disowns both of them, saying that it was his mistake.

Meena leaves the five-month-old infant boy in a dark forest, where a snake guards his life. On the way back from the city, Abdul Rasheed sees the child and protects him. Abdul also gets disowned by society because the baby is illegitimate and nobody knows about the parents and religion. In spite of all the odds, Abdul fights with the entire society and raises the child wholeheartedly. He names him Roshan (Master Sushil Kumar).

Meena starts working as assistant to a lawyer, Jagdish Chandra. Jagdish starts developing a soft spot for her. They both get married without Meena revealing her past. Mahesh is now a judge and is blessed with a baby boy Ramesh (Daisy Irani). One fine day, Roshan and Mahesh's legitimate son Ramesh meet each other in school with their respective parents. In the presence of Mahesh, Abdul tells the principal of the school that he found Roshan in a forest eight years ago.

In school, Roshan and Ramesh become the best of friends. When other kids make fun of Roshan, Ramesh supports him. One day, he takes Roshan to his home, where his mother Malti welcomes him with love and affection, but Mahesh throws the boy out of his house, saying that he is not worth our respect and love, as he is illegitimate.

After all this, Roshan gets depressed and falls into bad company. Ramesh tries to stop him and dies in a car accident. This leaves Roshan under more depression. He gets involved in a theft, but he is innocent. The case comes into the court of judge Mahesh Kapoor. Abdul goes to Jagdish to fight this case, as he is a lawyer. He tells Jagdish, in front of his wife Meena, as to who actually is the mother of Roshan, and that when and under what circumstances he found Roshan. She immediately recognizes Roshan as her son. She testifies in his favour, in the court. Mahesh, recognizing Meena and their son, admits his fault.

Next day, Malti tells Mahesh to go to Abdul's house and bring Roshan, since he is his son. On the other hand, Meena is ready to leave the house sneakingly, but Jagdish stops her, saying that he respects her even more now. She can bring the child home. Both Meena and Mahesh go to Abdul's house to ask for Roshan. He first says no, but after that, he gives Roshan to Meena and Jagdish.