Chaos has broken out on the planet Gunstar-9!! The mad Colonel Red has discovered four crystals that imprison a deadly being known as GoldenSilver, and plans on unleashing it onto the population of the planet! He must be stopped! Enter the Gunstar Heroes, Red and Blue! Unleash some mad blasting action onto the Colonel's army and don't let him bring GoldenSilver to life!! The fate of Gunstar-9 is in your hands!