He was an employee of Hindustan Shipyard limited which is building India’s nuclear submarine fleet. This is the fourth submarine engineer in the last twelve months who perished under mysterious circumstances. Navy leadership gets suspicious about a covert sabotage operation being carried out by an unknown enemy, to slow down India's attempt at acquiring a potent nuclear deterrent platform. After deliberations at different levels, an Intelligence Bureau agent is sent to Vizag to work as an undercover operative. What secrets will she uncover? Will she become the next target of an enemy spy ring? Would the Indian Navy exact revenge from a belligerent enemy?