Various entities such as paramilitaries, national armies and armed private forces began to secretly search for these "mysterious" artifacts in order to be used for their own good and against their enemies after the end of the Cold War. Only the ARCAM Corporation can stop these forces from destroying themselves with these "advanced" machines. With the help of its military arm, the ARCAM Private Army and their elite secret agents known as Spriggans (or Strikers), ARCAM plans to turn the tides of battle against those who would threaten the safety of humanity by using the dangerous artifacts.
Tells of a lone gunman named Hope Emerson, the son of legendary gunfighter Peace Emerson. Known for the Spot Burst Shot, a technique that involves the firing of multiple bullets at a rapid pace while fanning the revolver's hammer.
Emerson gets drawn into a mysterious conflict when he defeats a gunslinger named Hans "Grim Reaper" Giles in a duel after surviving a gunshot due to his bulletproof jacket. Hans had been part of a private mercenary force known as the Crimson Executioners, raised by millionaire Phillip Crimson.