A chemical blast at an army base triggers a mythological calamity. As Sgt. Dashboard tries to keep the peace at the regional police headquarters, the surge lets loose a harmful acid rain that dissolves the flesh of any individual trapped in it. Even worse, it causes the dead to rise again and attack the living. Can Rush and also fellow officer Nina Rossi figure out that is close friend and adversary, fend off the attacks, and protect their coworkers till the vicious cataclysm subsides?