In the distant future where men disappear for some reason, the world operates stably with the support of subtle changes in human genes and highly developed technology. During the mad scientists' inhumane somatic cell cloning experiments, a girl named "Yin Guo" was born. During her ignorant growth, she met Qiu Xi, a girl from her "same mother", and escaped from the laboratory together. Looking forward to a happy future, they became victims of the war just a few years later... Nuclear bombs and radiation weapons continued to destroy the urban homes where they lived, but unexpectedly gave some people in the world special abilities... Why will the girls fight? Who will we have a new encounter with?