R D Nayanar, the former Asst City Police Commissioner of Trivandrum, comes back to the city after a gap of seven years. Not as the police commissioner..
Mukesh tries tricking both his in-laws and his boss (Vijayraghavan) - with the help of Srinivasan - to go from being a pun to becoming manager of the company he works for, in order to marry Ratha (Vani Viswanathan).
Three trainee CID's (Unnikrishnan, Prem Shankar, Ommen Koshy) all compete against each other to solve the same case in order to get a job at a local detective agency (Secret Files Ltd.).