Udhayakumar and Vasanthi are collegemates and they fall in love. But soon he comes to know that she is engaged to be married. After he moves to Chennai and finds a job as a reporter at a magazine. He tries to fight for social change. In the process , he unknowingly gets to know a group of unsavoury characters who promise to help him in his goals. They frame him up. One day Udhaya is arrested for a crime involving a terrorist plot which he is not responsible. The movie is about how Vasanthi fights to prove his innocence and to get him out from behind bars.