The fate of humanity rests on a man with nothing to lose. Former Marine Raider Max Ahlgren trails those responsible for his family's murders to an antiquities dealer in Brazil. When that operation goes south, he must team up with Anna Kedrova, an enigmatic Russian archaeologist with a possible lead on the killers. She reveals a shared enemy: the mysterious and sinister Council of Osiris. Fighting their way through treacherous jungles and ancient Mayan tombs, Max and Anna follow a bloody trail of clues to the lost city of Zet. At the heart of the ruins lies the Gateway, a legendary artifact that the Council goes to monstrous lengths to locate and exploit. Whoever controls the Gateway determines the fate of the world. Facing an army of mercenaries and a horde of horrific creatures, Max must decide how deep into hell is he willing to go to have his revenge.