During the last years of universe War II, Federal Republic of Germany, desperate for any last appreciation to get the better of the allied power, look to their last leftover weapon and soldier. The German naval forces and the last leftover submarine be form together for one desperate last missionary post – a missionary post to assail the United state fatherland, know as Operation Seawolf. Captain Han Kessler, a grizzled pigboat commanding officer from both universe war, is name into service to do one missionary post a success and assist turn the tide of the war.