The film begins with some insight into a Brahmin family, with Patteri Thilakan as the patriarch, who is a great astrologer and helps a policeman (Janardhanan) crack a robbery case. The story then moves on to a political arena, where Balachandra Menon is presiding as the Chief Minister and battling against ministers among his own party who are keen to oust him in the next elections. During a chance encounter with Patteri (Thilakan), Patteri predicts the by-elections won't happen. Meanwhile, a mysterious and alluring woman is seen entering a flat where she meets an accomplice and they go through the details of an assassination which they plan to carry out very soon.The plan is successful and the Chief Minister is killed along with a few other officers. The initial investigations are headed by Vani Vishwanath who, aided by a camera found on the spot (presumably the killer woman's who sneaked in the avenue using a journalist pass) she manages to track down the flat where the woman stayed ...