A catastrophe shattered the peace, plunging the city into chaos. Qiqi held out alone in her shelter, never expecting that her ex-boyfriend, who had come looking for her, had already mutated. He would never hurt her. Instead, he carefully tended to her and kept her safe from danger. Outsiders who had survived the catastrophe coveted her supplies and kept testing her defenses, while one crisis after another closed in. In a world of utter desolation, this love that endured even through mutation became her only refuge.