Kamli belongs to a poor family. She sells datuns for a living. She sells them in local suburban trains as well as on railway platforms. One day she meets a bachelor named Pratap, who would like her to become a lady, and be educated, to which she agrees. She thinks that Pratap is in love with her, little does she know that she is the subject of a bet between Pratap and his friend, Kashinath, who both find her crude, crass, loud, and uncouth, so much so that both doubt that she can be transformed into a lady.

Dev Anand
as Pratap

Tina Munim
as Kamli

Girish Karnad
as Kashinath

Mehmood
as Popatlal

Simple Kapadia
as Ruby

Leela Mishra
as Aunty

Tarun Ghosh
as Magan

Piloo J. Wadia
as Mrs. Godiwala

Birbal
as Gholi

Raj Kishore
as Party Guest