There are times eight-year-old Nok thinks he should''''ve died in the gutter where Nahm found him. But, Nahm raised him to believe that - despite his burns and bad leg - living is good. At least, it was good, until three hired thugs chase Nok deep into the sewers beneath Goryo. There, he discovers an illegal relic from ancient times: a brain in a box. With the forbidden knowledge of centuries past at his fingertips, Nok finds a new reason for living: revenge.