Two years after vanishing in the Sudanese desert, Professor Harold McCabe reappears, delirious and dying. An autopsy reveals a horrifying truth: someone began mummifying him while he was still alive. As a mysterious disease spreads from the medical team who examined him, alarming news arrives from Egypt, suggesting a connection to McCabe's search for proof of Moses's ten plagues. Sigma Force Director Painter Crowe must race against time to investigate before a shadowy group of assassins erases all evidence and the ancient plagues begin anew.