It is 1945 and you are currently stationed in Hawaii. The Japanese have decided to bomb Pearl Harbor, and you are the only one left to stop them. Hit the B button to see your available turrets and place them on the map in order to prevent the planes getting from the top of the screen to the bottom. After they are placed, you can then upgrade them in order to get the best coverage. Hit the spacebar to start the level and make sure that your strategy is sound enough to kill them all. Save Hawaii and be a war hero. After you have beaten the normal mode, try survival mode as you go against an unlimited number of enemies that get stronger and stronger.