In Scrapyard Dog you play the role of Louie, the junkyard guy, who's companion Scraps has been dognapped by the dastardly Mr. Big. Louie has bombs and cans at his disposal to use against the enemies, which include gangsters, rats, and mice. He can also use shields to protect himself on route to the sixteen checkpoints in the game. Louie must reach each checkpoint in a certain amount of time in order to save Scraps.