The Earth has been invaded by an evil alien race. And since you are the top pilot of the most improved fighter craftaround, you are the world's only hope ! You must battle your way through 4 various areas, until you finaly battle highabove AREA 51, and face off versus the leader of the evil aliens in his mighty spaceship. Each area you battle throughhas 4 various levels, at the end of every area is a BONUS stage.