After the war, cyborg soldiers known as the Extended were discharged. Juzo Inui is one of them, a man whose body was transformed, his head replaced with a giant gun. With no memory of his previous life--or who replaced his head and why--Inui now scratches out a living in the dark streets of the city as a Resolver, taking on cases involving the Extended.

Keeping Tetsuro, the fugitive son of the Berühren Corporation, safe is going to take resources Juzo doesn't have. An old contact at the Extended Management Squad can help, but in exchange Juzo has to bring in the very first noncompliant Extended, Hayden Gondry, the suspect in a number of murders whose victims had their auxiliary brains forcibly removed. Juzo takes the case, but tracking down Gondry will entangle him in a larger conspiracy...