Deep beneath a Protectorate research facility, the horrors of the past come clawing their way out of the dark. When the Ratmen Clans launch a brutal assault on the laboratory that created them, Senior Researcher Elian Voss is forced to confront the consequences of eleven years of cruelty, experimentation, and fear. What begins as a massacre soon reveals itself as something far worse: the birth of a species no longer willing to live in chains.