Watch Dost (1974) Official Trailer

Maanav is an orphan who was brought up by a Catholic Priest. After completing his M.A. he returns home and finds out that his mentor is dead. He re-locates to Bombay and a man named Gopichand Sharma attempts to steal his luggage. The men become friends - Gopichand eventually changes his lifestyle, decides to be honest. Maanav gets him a job with Hercules Milk Foods. Maanav meets with and falls in love with the daughter of the owner of Hercules Milk Foods, much to the chagrin of her Dad. Then one day Maanav disappears from Gopichand and Kaajal's lives. He re-locates to Simla and it is here that he learns that things have spiraled out of control.