Xero knows what she wants: absolute rule over Southern Arizona, a cure for the superbug that's killing her best friend, and a decent bar of soap. Some are easier to get than others. At least, that's what she thought. To save her friend, she needs antibiotics. Not just any antibiotics: Ketacillin. The dreaded Zaps are dissolving Trina's lungs, and only the rare medication can save her. No problem: Xero is an expert smuggler. You want it, she ships it. As the ruler of the Tucson Exiles, she works as a double agent, hustling supplies for the government and pumping the desert full of designer drugs on the sly.With whispers of a full revolution echoing through the desert, Xero questions her uneasy alliances with a shady Phoenix psychiatrist and a roving cyborg mercenary. Especially when Yuma goes kaboom, and her Ketacillin is destroyed along with it. Catastrophe looms, and she finds herself stuck in a complicated web spun from her biggest demons: money, germs, and drugs. As she's sucked deeper into a net of convoluted schemes to dig up some Ketacillin, she would do anything for a simple hot shower. Who do you have to kill to get some soap? The body count climbs as Xero struggles to protect her friends and stay clean in a very dirty world.