<p>Numo is a small and loyal homunculus&mdash;a synthetic servant born of alchemy and mandrake root. By design, he should think only of his masters&rsquo; needs. But instead, he can&rsquo;t stop thinking about Hammerfist.</p><p>Hammerfist is a lady battle-homunculus, much larger and with much sharper appendages, made for the bloody contests of the sporting arena. She has eyes like the purest embers, a mane like a sea of moon-glitter, and, Numo discovers, a horrible brain disease that is eroding her sanity. He is desperate to help, but presents of flowers and tree sap aren&rsquo;t enough. She needs a way to get out of the arena. She needs a revolution.</p><p>Numo only wishes he knew what a <em>revolution</em> was.</p><p>But it doesn&rsquo;t matter. If it will save Hammerfist, he&rsquo;ll do anything. Except, of course, the things he doesn&rsquo;t know he&rsquo;s supposed to do.</p><p>Things like keeping the revolution a secret.</p>