Ten years after nuclear war devastates Britain, Lazarus and his adoptive siblings are flesh and blood to each other; to their victims, they are ruthless killers who should exist only in nightmares. Now their next target, a group of men seemingly made soft by a decade of hiding in underground bunkers, welcome the upcoming attack because they are far from weak. Armed and prepared, they are ready for Lazarus and his family.

After the ensuing violence, lost and alone, Lazarus is desperate to make it through the irradiated wasteland to his clan before their captors reach a new government forming in Dover. Armed only with his axe, Lazarus will stop at nothing to kill the men who would dare threaten his kin.

But, unknown to either side, a terrible secret waits far below Dover Castle, lost for decades in the silent labyrinth of wartime tunnels.

A secret infinitely more dangerous than any killer