Reeta Mehra lives a modest life caring for her mother and working in a small store owned by a magnate, Sohanlal. One day, her boss tries to send her to a businessman to entertain him but she refuses. Angry, he informs Sohanlal who contrives to send her to jail for a year on trumped up charges of stealing jewelry from his shop.

On her release she finds that her mother has died so she pledges to take revenge on Sohanlal. Heeralal Mehra, who had escaped arrest a year earlier with Reeta's help comes to look for her. They retrieve the box he had given her to safeguard. To Reeta's surprise it contains valuable jewels. He tells her his story and how he was cheated by Sohanlal. Twenty years earlier, Heeralal had been convicted instead of Sohanlal and Sohanlal had promised to look after Heeralal's family. But when Heeralal returned he discovered that Sohanlal had just used the money for himself. He could not find his family.

Now both Reeta and Heeralal form a pact to take revenge on Sohanlal. They use Rajpal, Sohanlal's only son for that purpose. Rajpal, an innocent young man falls easily for Reeta. He marries her against his father's wishes. Later he learns that Reeta just wanted to use him, but he still loves her and asks her to forget everything. But Reeta and Heeralal disagree with him and publicly embarrass Sohanlal.

Annoyed and embarrassed, Sohanlal arranges a hitman for Reeta's murder. Heeralal, however manages to save Reeta, but Rajpal thinks that Reeta killed the hitman. He surrenders himself as the murderer. Heeralal won't tell the truth as he wants Sohanlal to suffer. Reeta realizes how much she loves Rajpal, unhappy that things have come so far. Just then Sohanlal sees a picture of Reeta's mother and recognizes her as Heeralal's wife. Heeralal finally realises that Reeta is his daughter and surrenders himself to the police to save Rajpal. He is acquitted as he killed to save an innocent person's life, but receives a one-year sentence for his previous crimes. The film ends with reconciliation all around.