A petty thief informs the CBI that there is a conspiracy made by four people to kill the Prime Minister. The CBI does not believe him. However, they decide to take precautionary measures and investigate the thief's statement. But, the CIB believes the theory when the thief is killed. The CBI director appoints CBI Officer Dev on the job.
Dev's first task is to find out the four people in the conspiracy. On the basis of the thief's statement Dev believes that one of the four is a CBI officer who is passing the information to the assassins. In the investigative process Dev finds one conspirator, but, he is killed. Dev gets a eyewitness. She is Tina, a club dancer, who has been the killer.
Dev is trying his level best. But, he faces failures because, the assassins are very intelligent and do not leave any clue of their whereabouts. Until, one day when one of the conspirator makes a mistake. Which leads Dev to the assassins mole in the CBI. But, also results in Tina's death. The traitor is killed. Before dying he reveals the name of the place where Dev can get answers to all his questions.
Dev reaches Ooty as a school teacher and comes along strange and mysterious people like school teacher Komal, Ranjeet (check his name in the film), the take Colonel, the school chowkidaar who looks exactly like on conspirator who is already dead. But the principal Mahendra Pratap is however a very fine and a jovial person. The conspirators try to kill Dev. But, Dev is saved. He comes to know that the main conspirator is none other than Mahendra Pratap the principal of the school. Mahendra Pratap manages to escape with his co-conspirator, the fake Colonel. Among the four conspirators two are alive. Dev continues his investigation with Komal who is a narcotics agent and a stage comes where the Prime Minister resigns due to political differences within his party and for the betterment of the nation. The CBI thinks that the mission to eliminate the Prime Minister will be aborted because the Prime Minister has resigned. But, in the most shocking revelation Dev comes to know that Mahendra Pratap has personal motive to kill the Prime Minister and reason is none other than Dev himself. Mahendra Pratap is Dev's father. A political conspiracy suddenly changes into family drama where Dev does not identify with Mahendra Pratap as his father. But, as an assassin and it is his duty as a CBI officer to eliminate any anti social element which can pose a threat to the country or the people of the country. Mahendra Pratap however wants to convince Dev that whatever he is doing is justified. Dev is not convinced. In the end Mahendra Pratap is killed by Dev.
(From the official press booklets)