Government forces have received information that the special combat squad "Phantom," led by the rebel army's Commander Makuba, has once again resumed activities. They have reportedly taken a considerable amount of government forces hostage, and we have subsequently learned an even more terrifying truth.

　Rebel forces have made contact with an alien race and are proceeding with the production of weapons employing technology beyond our comprehension.

　The situation is grave! It's up to you to wage a solo attack on the enemy base, and save those hostages!!