Roy Alex, an investigative journalist writes on hawala money from the Middle East, where he meets former M.P. and business tycoon Rahim Haji as invited by Haji's driver Basheer. Haji had lost his M.P. post a year ago after a write-up by Roy Alex in a magazine. Being an expert and a previous ace trader of the flow of foreign currency reserves to Kerala, Haji states to Roy that, most of the foreign reserves are mainly concentrated along the Gulf-American belt starting from Kottayam and extending till the coastal town of Varkala. He invited Roy as a part of reviving his failed business, and to eliminate his business rival Narendra Shetty, whom he considers as responsible for destroying his business.
Roy follows a van carrying a drama troupe, which reaches a home far away as a part of a drama, where he sees the owner of the home, a businessman and Chakrapani, the drama director, having demands of black money, and he captures it. However, Chakrapani finds them and kills him with his dogs. While passing through a nearby road at the same time, Rahim Haji tries to contact Roy, but soon learns about his death, and soon leaves to see Shetty, who fatally shoots down him for trespassing through his territory. It is later seen that Basheer has betrayed Haji as he is in cahoots with Shetty. Haji's assassination comes as a serious blow to his party.
The C.M. Nair appoints Mohammed Sarkar, an IPS officer in Tripura cadre, as the SP to investigate the assassination. At the same time, the party undergoes a fast headed by MLA Kunjalavi, which results in a serious rift between the police officers and party workers. After interrogating Chakrapani and Basheer, Mohammed Sarkar manages to gather evidence against Shetty and a final confrantation occurs where Mohammed Sarkar kills Chakrapani. Shetty tries to kill Mohammed Sarkar, but his colleague CI Gurumoorthy gets killed. Enraged, Mohammed Sarkar kills Shetty and Brigadier Giridhar Baruva by destroying the warehouse.
