Toofan Mail (1978)

When a simple and straightforward fisherman finds an unconscious body along the beach, he brings him home to his wife to try to heal him. However, that evil man with a snake medallion ends up raping and murdering his wife, soon after regaining consciousness. The fishermen leaves for the city with his two daughters, in order to get over the loss of his wife, begins working as a taxi driver, and provides his daughters with love and affection. However, in a cruel twist of fate, one of the daughters gets lost during a game of hide and seek and ends up being adopted by the evil man with the snake medallion, who is a mafia kingpin. After growing up, the girl becomes Rani, an indispensable aide of the mob boss, who excels in violence and crime. Meanwhile, unbeknownst to her, her sister Manjhu also excels, but in education and extracurricular activities. Will the paths of the two sisters be on collision course? Can Manju succeed in avenging her mother's death? Will Rani ever come to know the truth about the man she considers her saviour and adoptive father?