As the man-made island fortress known as Sea Base cruises off the coast of the Korean Peninsula, North Korean troops are preparing for war. American fanatics have been bombing their embassies around the world, and tensions are at an all-time high. The situation worsens with the added presence of a Chinese submarine following every move of Sea Base, looking for a weakness and waiting for a chance to destroy the future of the United States as a sea power.

Now, with the worid watching, Sea Base will have to prove itself under fire or perish under the depths of hostile waters...