You just received your Fighter Pilot's license and were assigned to a remote outpost in the Deneb star system. Under normal circumstances, you would be guarding the StarBase with many seasoned pilots, but they were recently called away to battle in a neighboring star system. That means it is allup to you...
No evil activity has been detected in your assigned system for ages, so do not worry. Nothing is going to happen, right? Wrong! Moments after you take your post, the SpaceWatch sensors detect an asteroid storm coming straight towards the StarBase! As you board the ship, your Captain sends a message promising that you will be promoted to the Princess' Royal Guard, the highest coveted post, if you destroy all the asteroids and save the base.