The story takes place in the city of W, where a group of gangsters have been wreaking havoc. They are numerous and well-armed, but as the embodiment of justice, you decide to take them on single-handedly. Because you don't have enough money to buy weapons, you start off carrying only a handgun. In the battles against the gangsters, you earn money by constantly killing them. With the money you earn, you can purchase more weapons such as dual-wield pistols, shotguns, submachine guns, machine guns, bombs, and rocket launchers. Eventually, through your efforts, you eliminate all the gangsters in W city, and the people can once again live peaceful lives. Thank you for your help... Now let's begin our story!