The Monster Squad have faced creatures so fierce that the hardest of men would feel their legs tremble with fear. Now, a threat so overwhelming comes to light that they must turn to the very monsters they've hunted in the past to help protect humanity.

A dark storm brews on the horizon and the teams find themselves uprooted from the security of the facility they call home and transplanted to the middle of the Nevada desert, all to draw the evil to them and away from population centers. The teams prepare for a showdown with the darkest of creatures and an army of undead with the very existence of humanity hanging in the balance.