Inspector Srivastav is framed by a wily and cunning gangster, J.K., and unable to prove his innocence, hangs himself, leaving behind his wife, and son, Vijay. Years later, Vijay has grown up and has joined the police force as an Inspector. Unlike his dad, he is corrupt and does accept bribes to turn a nelson's eye to crime. The City Police are assigned the task of apprehending a customed man called "Shahenshah", who operates at night and targets, tries and kills gangsters in a "Judge and Executioner "style. No one knows the real identity of Shahenshah, as he is feared by the police department, and respected by the poor and middle-class.
After inspector Mahendra Nath is killed by criminal elements; his son Vijay takes admission as deputy jailer with the intention of reforming criminals so that he can fade way crime from his country. He is shocked to meet one of his truck-driver friend, Shambu who now turn an inmate with a record of going in-and-out of jail often. Vijay then vows to investigate as to how the kind-hearted man he know become a hardcore criminal.
A honest but disgraced Police Inspector's attempts to clear his name pits him against terrorists and the brother of his sweetheart.
Two brave and smart young men: namely Police inspector Prabhat Singh (Sunny Deol) and a reformed criminal Akash Bhardwaj (Chunkey Pandey) is sent to the African country of Kenya in order to apprehend the underworld criminal Azghar Jhorat (Amrish Puri). He is a criminal in India but his whereabouts is known in Kenya. While in Kenya they reaches up with a stern Kenyan police officer who is of Indian origin Surya Pratap Singh (Naseeruddin Shah), it is his duty to make Prabhat and Akash abide by the Kenyan laws but to capture Azghar both is forced to break the laws and gets into confrontation with Surya where a misunderstood is created. Will Akash and Prabhat be able to fulfilled there duties towards there country or will they leave there mission half way and run like cowards?
Trinetra is the story of revenge of a son, who lost his honest father, to a group of evil minds. It is the story of a son's infinitive love for his mother, who lost her husband. It is the story of a son's revenge on his father's killers.