You have to liberate your planet system from alien invasion using your spacefighter. Player can obtain various extra-weapons and special abilities by destroying enemy cyborgs, fighters and motherships. Each planet has its own cyborgs and bosses.
You have to prevent cyborg invasion to your homeworld. Make use of enemy weaponry, find vulnerable spots of colossal command ships, take control of enemy teleportation system - defend the human race by any available means.