Kahan Hai Kanoon (1989)

Vishal and his new bride Jyoti shift to Bombay for work purposes and they are blissfully happy as they settle into the City of Dreams. But this idyll ends when Jyoti gets raped and murdered by four men: Prince, Bakya, Peter, and DD (Disco Dancer). Vishal is left helpless as none of the police or politicians are supporting him and he decides to accept help from Dharmatma, who is known to get justice for people. He gets a hint from his servant that one of the goons was Bakya. Vishal wants to kill Bakya, but his girlfriend Rita tries to save him by trying to kill Vishal, but Rita realizes the crime and decides to tell Vishal the truth. After Bakya's death, Prince, Peter, and DD attack Rita; just before she dies she reveals the truth of Jyoti's murder to her friend, whose name is also Jyoti. This Jyoti decides to meet Vishal and give him the names of the other killers. Vishal had once saved the same Jyoti from molesters, so he decides to go after the killers and goes to Dharmatma, telling him that meeting him didn't prove him of any help and further if he wants to help him, he should surrender him the last victim--his son Prince.