Deewaangee (1976)

Shekhar, an orphan running a garage with his friend Birju, is cynical and distrustful of women, finding solace in his friendships with Bill and Harry. His life changes when Birju introduces him to Kanchan, a runaway. Initially resistant, Shekhar's attitude shifts when he learns her uncle has offered a reward for her return. They befriend each other, fall in love, marry, and have a son. Their peaceful life is disrupted when Shekhar receives a mysterious suitcase from Bill, who is later found dead. The suitcase contains stolen diamonds, which Shekhar keeps, upsetting Kanchan. Betrayed by someone close to him in the diamond pursuit, Shekhar discovers that two gangs have kidnapped Kanchan and his son. Determined to save his family, how far will he go to make things right?