A famous actress, Aswathi (Parvathy Jayaram), is found hanging in a hotel room and declared dead by the doctors. Devadas (Sukumaran) who is the appointed police investigation officer, investigates the case and confirms the cause of death was suicide. Due to public pressure, the Kerala government is forced to transfer the case to CBI. CBI official Sethurama Iyer (Mammootty) is pressured by his superior to complete the investigation with a short deadline, thus he investigates the case with his the help of his two juniors Vikram (Jagathy Sreekumar) and Chacko (Mukesh (actor)).