Alive! After four years believing her older sister lost and presumed dead in the horrible Breakup of the United States, Lily Barrett gets word from her dear friend, Ai – and Ai's family of Machine Civilization – that Callie Barrett is very likely alive... but over 900 miles away in Knoxville.

Using the resources of her and Ai's family, Lily puts together a search party to go find Callie: old, broken, and burnt Orloff – an expert in surviving in the Badlands, Ai's little sister, Fausta – her machine mind controlling a Combat Android to protect her friend, all together in a cart pulled by their sturdy pony, Clyde.

It's almost a thousand miles to go, with something very odd trying to limit their ability to communicate over distance and even to cross bridges. A chance meeting along the way in Huntsville, former Alabama, wrecks their plans, and puts all of their lives in danger.