A two- front war between Indian intelligence agencies and the Pakistani establishment.

In 1971, amid rising tensions between India and Pakistan over the liberation war of East Pakistan, Pakistan navy, in a top secret mission, plans an attack on Indian majestic-class aircraft carrier INS Vikrant, to gain control over the waters of Bay of Bengal. They send their best-in-class submarine PNS Ghazi, but are intercepted by an Indian submarine INS Karanj (S21). An underwater attack ensues.