2002 - Southern Iraq
A CIA covert operation in the desert uncovers ancient ruins concealing a humanoid statue, with six wings and the face of a lion. Team member Ezekiel Cross is convinced that it represents one of four angels prophesied in the Book of Revelation, and when the agents are attacked by Iraqi forces, leaving Cross the only survivor, he steals it to begin his own mission from God ...
Present Day - New York
Depressed following the death of a friend, Nina Wilde has been focusing her energies on her pregnancy, rather than the archaeological discoveries for which she is renowned. But adventure still finds her - when she's kidnapped by religious cultists intending to force her to locate the remaining angels!
Held prisoner in a strange village, Nina engages in a battle of wits against her captors, knowing her only hope of rescue is for her husband Eddie Chase to find the other statues first. But with a ruthless maniac determined to fulfil Revelation's prophecy, time is running out. Only by keeping the angels out of the cultists' hands can Nina and Eddie prevent the coming apocalypse ... but what price will they have to pay?