A mysterious man known only as The Stranger is held captive and tortured in a highly advanced prison, a chain of ten islands floating above a distant planet. Each island is watched over by a single powerful guardian whose sole purpose is to keep him from escaping. His imprisonment ends when a masked figure called The Voice sets him free, hands him a sword and a gun, and urges him to fight his way out. To win his freedom, The Stranger must face and overcome every guardian standing between him and the world beyond.