The ancient Egyptian city of Karnak has fallen silent under occupation—seized by forces unknown sometime in the late twentieth century. A special team of combat veterans is sent to the valley to assess the threat, but the player's helicopter is shot down before anyone reaches the ground. Stranded and outnumbered, the player must push through alone, battling waves of Kilmaat—an extraterrestrial insectoid species commanding a grotesque army of mummies, Anubis soldiers, scorpions, and restless spirits. Navigating the ruins, the player receives guidance from King Ramses himself, whose mummy the Kilmaat unearthed from its tomb. Their goal: resurrect the king and harness his power to subjugate the world. Stopping them means fighting through everything they have thrown into Karnak's shadows.