Jerusalem has had more of an impact on human civilization than any other city in the world, but incredibly, over the generations the place where most of the chapters of the Bible were written was forgotten, as if swallowed up by the earth. The film tells the fascinating story of the 19th-century rediscovery of the ancient City of David by the British archaeologist Capt. Charles Warren. Viewers share the adventures of Warren and his deputy Sgt. Henry Birtles as they seek the ruins of ancient Jerusalem, and even experience together with them the dramatic moment when the distinguished scholar almost drowns in the waters of the Shiloah Tunnel as its level suddenly rises.