When the Lone Ranger went to San Francisco to combat the Barbary Coast, he rescued Sally Grierson from abductors, and in so doing, made a steadfast friend of her father. At the same time, he made ruthless enemies, who would stop at nothing to get rid of him. The masked man fully realized the power and depravity of the leaders of the Barbary Coast, the most dangerous spot in the world. He knew that Dirk Gimlet, owner of the Thunderbolt Cafe, had already sent Bart Sage to kill him, and would do it again...