Dil Apna Aur Preet Parai

Sushil Verma (Raaj Kumar) is a surgeon in the Shimla Hospital. He lives on the hospital grounds in a doctors house with his ageing mother and younger sister Munni (Kumari Naaz). Sushils father died and his fathers close friend paid for his medical school fees, thus creating a debt that Sushils mother feels needs to be fulfilled.Karuna (Meena Kumari) is a nurse who comes to the Shimla hospital and first encounters Dr. Verma during an emergency surgery.

Both are clearly besotted with each other, but keep their feelings restrained.By chance, on a nurses beach day trip, Karuna meets Munni, who injures herself whilst playing. She takes Munni back to her house, not knowing that she is Dr. Vermas sister, and the house she is visiting belongs to him. She dresses Munnis wounds, sees how much work needs to be done in the house, and the fact that his mother is too ill to attend household tasks.

She immediately steps in and fulfills the duties of the housewife; cooking, cleaning and taking care of everyone. Sushil comes home to see this and falls even more in love.However, later on his mother organises a trip to Kashmir for the whole family, and conveniently guilt trips Sushil to marry Kusum (Nadira), the daughter of the man who paid for his medical school fees.They come back to Shimla, and Karuna is devastated when she finds this out. Although she manages to conceal this for a while, situations keep arising and Kusum soon gets jealous of Sushils preference for Karuna, and her perceived ill-treatment.

Kusum manipulates and mistreats her mother-in-law and sister-in-law, until Sushil orders her out of the house. She goes back to Kashmir.Dr. Vermas mother then realises her mistake and should have gotten him married to Karuna.To avoid scandal Karuna moves to another hospital.

But Kusum seeks to enact revenge on her. Dr. Verma finds this out and tries to beat Kusum to Karuna, which yields a cliff top high speed car chase, resulting in Kusums death. The film concludes with reunion of Karuna and Sushil.