kathir is a selfish youth in search of a job. despite being married and having a child, he is waiting for a job offer that he feels meets his standards. meanwhile, his wife anitha is the breadwinner of the family. prabhakar, a friendly neighbour who acts as his father figure, gets him a job as an informant with the less than honest local police inspector. kathir uses this opportunity to take revenge against the violent bar owner who humiliated him in front of his friends, despite prabhakar's advice. with his tip-off, the police raids the bar and arrests the owner for running an illegal gambling den as a side business. one night, prabhakar is murdered by a group of thugs while scared kathir runs for his life. suspecting that prabhakar was murdered because he too was an informant, kathir starts becoming paranoid. eventually, he comes to realize that the inspector he is working for is now in cohorts with the bar owner after being promised a large sum of money as commission in return for permission to run their illegal businesses. since kathir is the only witness for most of the inspector's corrupt activities, the inspector has the bar owner send his thugs to kill kathir too. however, the inspector eventually feels sorry for kathir and allows him to live as long as he stays silent about all the underground operations being carried out by the local police station. in the end, kathir takes up a low-paying but proper job at his wife's garment factory and earns an honest living.