Jayakumar is a senior officer in Air India. He is married to Indu, who is a housewife. Indu had married Jayakumar against the wishes of her father, and so her father is not in good terms with them. Their marriage was solemnised in the presence of Sivanandji, a well known musician and singer. Jayakumar was having a good time with his family and friends. Their joys have no bounds when Indu informed that she is pregnant. At that time, Jayakumar receives a letter from his native place inviting him to come to pay homage to his father's brother, who passed away a year ago. Jayakumar starts in a train and reaches the railway station at midnight. Since there were no official taxi in the station and he had to travel another 40 km, he walks and reaches a junction where he finds a shared taxi, whose driver was calling out for passengers to Pollachi. Already there were two commuters inside. After waiting for some more time, two more people come running with a luggage box and join them. On their way, they are stopped by police. Alex and Tommy take their luggage box and escape. Police follow them. Tommy cleverly surrenders to police, allowing Alex to escape with the box. However, in a hurry, the luggage boxes had got interchanged, and Alex had actually escaped with Jayakumar' box. On enquiry, Jayakumar tells that it is his dress and identity cardin the box. But when police opens it, they find packets of brown sugar. It was then that Jayakumar realises that the boxes got interchanged. Adding to Jayakumar's woes, Tomy confesses that he and Jayakumar are partners in transporting drugs. So both of them were arrested. Despite cruel and harsh treatment by the police and narcotic team headed by Balu and Vishnu, Jayakumar doesn't accept the crime. Jayakumar also faces harsh treatment from the hands of his co-prisoner Vasu. Damu, a thief who does small robbery, only to be in jail, as he is unfit to do any other job, is the only source for peace of mind in jail. With his help, Jayakumar beats Tommy and comes to know about Balu's involvement in the case. When Balu comes to know that the secret has been revealed, he plans to kill Jayakumar and Tommy. For the sake of questioning by narcotic department, Jayakumar and Tomy are taken out from the jail. As instructed, Alex follows the police jeep in a lorry and hits the police jeep. Tommy and a few policemen were killed on the spot. However, Jayakumar escapes miraculously. Meanwhile, Indu seeks help from her father to fight out Jayakumar's case. However her father insists on a divorce. Since she was not willing for it, she was in search of a lawyer. Finally she goes to Advocate Hariprasad, who had served 15 years as police officer, and then stepped down to become a lawyer. Hariprasad succeeds in getting Jayakumar out on bail, but then Vishnu and Balu visit Jayakumar that night and ask him to surrender accepting the crime. Otherwise they will fill the charge sheet against him, which will result in serious punishment. Jayakumar is confused with it and he discusses the same with Hariprasad. Its then Hariprasad reveals how cruel the drug mafia was to his family. Hariprasad's younger brother was a victim of drugs, and he had killed his parents and sister and then killed himself. His fight against drug mafia started since then, and now Hariprasad seeks support of Jayakumar for the same. Jayakumar agrees to it. On the way they happen to see Alex entering customs officer Samuel's residence. Jayakumar visits Samuel's house pretending that it is for some other purpose. Since Samuel asks him to take leave, Jayakumar leaves his house. Jayakumar and Hariprasad then kidnaps Alex and questions him. Meanwhile, Balu suspects Samuel; as Alex was missing after visiting his house. Quite dejected, Samuel plans to provide all documents related to drug mafia to Jayakumar. Jayakumar collects the documents adventurously from Samuel, however Samuel gets shot and is killed. Jayakumar rushes to hand the documents to Hariprasad, however, he is shocked to see that Hariprasad is killed in a bomb blast. He follows Vishnu and kills him. The main head of the drug mafia Sivanandji now reaches Jayakumars house and asks Indu for the documents that was handed over by Samuel. Indu refuses to hand over the same and she is beaten up badly. Jayakumar killed Sivanandji at the airport in revenge
