The story is about twin girls, Seeta and Geeta (Hema Malini in a dual role), who were both separated at birth. Seeta, the long-suffering heiress, is treated worse than a servant by her abusive, money-grubbing aunt, Kaushalya (Manorama), her spoilt daughter, Sheela (Honey Irani), and her equally cruel brother, Ranjeet (Roopesh Kumar), despite the fact that the family is living off Seeta's late parents' money. Seeta's only consolations are her meek uncle, Badrinath (Satyen Kappu), and her elderly, wheelchair-bound grandmother (Pratima Devi). Meanwhile, Geeta grows up to be a feisty girl raised in a slum and works as a street performer along with Raka (Dharmendra), her friend and neighbour.One day, Seeta decides that life is not worthy and runs away from home to commit suicide. She is rescued but misunderstood to be Geeta and taken to Geeta's home by Raka. Meanwhile, Badrinath and Kaushalya are frantically searching for Seeta and find Geeta. The two misunderstand her to be Seeta and attempt to force her to come with them, but using some of her clever tricks, Geeta escapes from them and the police who have been searching for her. She then meets Ravi (Sanjeev Kumar), Seeta's prospective groom, who believes her to be Seeta as well and takes her to his home. Ravi is surprised by this "Seeta" and the Seeta he had met previously and falls in love with Geeta.Meanwhile, the real Seeta is living at Geeta's home, where Geeta's foster mother and Raka are surprised by the sudden gentle nature of "Geeta" and her desire to do the housework. When Raka attempts to coax Seeta into performing, she is unable to do so, however, Raka falls in love with Seeta. Elsewhere, the real Geeta is living at Seeta's home where she realises the cruelty that Seeta has been living under. She vows to teach Kaushalya and Ranjeet a lesson and begins to set everything on a proper course. In the process, Geeta resumes control of the money and restores her grandmother to the head of the household where she belongs.However, things take a drastic turn when Ranjeet sees the real Seeta in a marketplace and discovers the truth. As a result, Geeta's cover is blown and the police arrest her for impersonation, while Kaushalya and Ranjeet locate Seeta and bring her back to her life of mute slavery, abuse and confinement. Raka secretly releases Geeta from prison and reveals that she is Seeta's long-lost twin sister after learning about Geeta's true identity from her foster mother. This leads to Seeta, Geeta, Raka and Ravi fighting against Ranjeet and his henchmen and have the police arrest them all for their crimes. In the end, in the presence of Seeta and Geeta's grandmother, Badrinath and the reformed Kaushalya and Sheela, the real Seeta marries Raka while the real Geeta marries Ravi.