Teesri Kasam

Hiraman (Raj Kapoor) is a rustic villager, a bullock cart driver, from a remote village in Bihar. Hiraman takes two vows based on difficult situations in his life. He then meets and befriends Hirabai, a nautanki dancer. In the end, Hiramen takes a third vow.Hiraman has traditional and conservative values.

While smuggling illegal goods on his bullock cart and narrowly escaping the police, Hiraman takes a vow (the first kasam) to never again carry illegal goods. Subsequently, while transporting bamboo for a timber trader, Hiramans load upsets the horses of two men. The two men then beat Hiraman. After this, Hiramen takes a second vow (the second kasam) to never again carry bamboo in his cart.One night, Hiraman is asked to carry Hirabai (Waheeda Rehman), a nautanki dancer, as a passenger to a village fair forty miles away.

As they travel together Hiraman sings to pass the time and tells Hirabai the story of the legend of Mahua. As the journey progresses, Hirabai is mesmerized by Hiramans innocence and his simple philosophy of life. Hiraman sees Hirabai as an angel of purity.Once they reach the village fair, Hiraman joins his band of bullock cart drivers and Hirabai joins the nautanki company. Hirabai asks Hiraman to stay at village fair for a few days to see her dance.

Hirabai arranges free passes for Hiraman and his friends to see the nautanki on every night for the duration of the fair.As Hiraman attends the nautanki, he becomes aware that other people see Hirabai as a prostitute and this disturbs him. He tries to shield and protect her from society. As the days pass, the bond between Hirabai and Hiraman grows stronger. When Hiraman becomes involved in fights with local people who disparage Hirubai and her profession, Hirabai tries to make him understand that it is the harsh reality of her life.

Hiraman asks Hirubai to leave her profession and to start living a respectable life. Hirabai refuses to leave. Feeling depressed, Hiraman leaves the village fair and returns to his village.Hirubai meets Hiraman and tells him her secret that she had been sold and she was not a virgin beauty and then leaves. Hiraman then takes a third vow (teesri kasam) that he will never again carry a nautanki company dancer in his cart.