A warship sinks during peacetime. Everyone presumes it to be an accident. Lieutenant Commander Rajen, the Weapons Officer, suspects otherwise. But when he puts forth his theory of sabotage, he is ridiculed and accused of negligence and unprofessionalism. Now he must prove his point lest his reputation is tarred for ever. In his quest to establish his innocence, he stumbles across a sinister plot of systematic sabotage of strategic naval assets. The saboteurs are ready to execute the biggest attack ever. Rajen is racing against time. Can he expose the Enemy in the Ranks?