In a land plagued by war, the greatest battle humankind has ever known is about to be fought. In what is now the Middle East, a section of desert that was deemed cursed, is home to the greatest archaeological find of all time; "The Wall of Tartarus" an ancient temple which predates all known civilizations. This temple holds a very deadly secret. It is the doorway to Hell. This is where the fate of mankind will be decided. The Hades bunker houses a group of archaeologists led by the world-renowned Dr. Angelo Scara, his daughter Annie and Dr. Tony Spencer who have unknowingly brought the catalyst for the fall of Heaven and Earth into play. They possess the "Eye of Satan" a frightening amulet that has an incredible power. This amulet can give Satan and his minions the ability to roam the realms between Heaven and Earth freely.

"When Demons are at the Door, you have to let em' in... Let em' in and kill em!"