After an unexpected aliens' attack, a long and exhausting war has started. The Earth's defenders have virtually no resources and manpower to continue the resistance. There is only one chance left. This chance is you. You are to navigate a small single-pilot spacecraft directly inside the alien headquarters and destroy their Main Brain. After you do this, the aliens will be disoriented. This is the only way to save the planet Earth. Good luck, pilot. You'll need it.