In the wake of the Patriotic War and subsequent pandemic, a city of impoverished survivors is ruled by the charismatic Sensei and his strict environmental laws. Detective Sara Fidelia is called in to investigate a rare murder--a mutilated Mort has been left at the entrance to the walled city. She sets out to find the Perp, travelling through a ruined landscape to the distant rebel town of Excursion--a journey that brings her much more than she bargained for.