The player controls a pilot with a jet pack and flies through a barren landscape, whose sky is haunted by a number of different aliens. There is no shortage of different enemies.
The enemies will try to catch the men on the surface. Your task is to save the men. The player must shoot down the alien without hitting the man. Sometimes the aliens carry an android that is similar to man, but deadly. Make sure that the androids are not taken in. All men must be transported to a surface base, where they are brought to safety.