Freed from their military prison, the X-Men race through the ruins of the city to rescue their teammates from a terrible fate! Horrified by what mutants must do to survive, Kate Pryde and her family must struggle to find a way to save their people, and seek out the haven where a dire weapon waits.

Reeling from the secrets that Kate Pryde has kept, the X-Men lead a prison break from the last mutant internment camp. The X-Men clash with friends and enemies alike. Their true purpose is revealed at last!