Arvel Walsh can tame mules, but can he tame the wild Arizona frontier, and the Mexican girl known as Chica, a young woman as unpredictable as the land she roams? Arizona in 1892 is the last of the wild country in America. Laws are hard to enforce and bad hombres know it. Texas pushed them out of their land with the famous Texas Rangers, can Arizona do the same? Challenged by savage bandits, psychotic serial killers, and anarchists, Arvel Walsh and Dick Welles will have to summon all their knowledge, and all their guts as veterans of the Civil War to make the fledgling Arizona Rangers a force to be reckoned with. Follow the two men as they ride across the deserts and through the arroyos of southern Arizona, encountering dangers, a mystical aborigine, a severed head in a bottle, and side show freaks while discovering that heroes may be found in the most unlikely places, and that a certain beautiful and wild woman may very well be the key to their success and their salvation, in more ways than one.