A rogue general has taken control of our great navy. He is preparing to launch nuclear strikes on capital to provoke retaliation against the old enemy. Now, only you stand alone. You must destroy your own comrades, for the good of the people. May your death save the lives of millions. Warning has reached the capital. The populous is being evacuated. Each U-Boat you sink will delay the launch and allow more citizens to reach the safety of our nuclear bunkers.