Takes place after the destruction of the "God of Ruin" by the end of Gunstar Heroes, blast had created four moons orbiting Dat.Tuy, many years later, making a moon next Thursday showed a plans to restore the evil empire and gold again.
In the game you will transform into the two main characters in red and blue, against Empire as part of an organization called the "third eye" .Also with yellow characters, the Gunstars to go to the surface moon, stop empire revived and regained Treasure Gems, four mystical stones with a strange power that drove the story of the previous game.
