1939. Dr. Gerhard Denninger, a German Jew and archeologist working for the Ahnenerbe (the Heritage Bureau of the SS), is approached by medievalist Otto Rahn who tells him a fantastic story of Templars, Church scandal, and a long-buried manuscript. Could this document be the key to finding the famous lost treasure of the Cathars, a heretical sect nearly wiped out by Crusade and Inquisition in the 13th century?

1944. Denninger, released from a forced exile in Tibet, returns to Europe and with the help of a group of American soldiers continues his quest for the secret of the Cathar treasure. With dangers dogging them at every step, will they find what they’re seeking and will they be prepared for the shocking discovery that awaits them?