An alternative world where iron is not used by Western civilization, as rust is declared godless by all monotheistic religions A world where countries of the East that do not have such a ban pose a serious threat to Europe And where the key to the future by the force of circumstances was in the hands of a young British scientist The mystery of the heretical manuscript, the machinations of enemy intelligence and the "friendly" Inquisition, war and peace, love and betrayal All this will meet him on a difficult path to unraveling .. But making the right choice in the end will be much more difficult than going through all these tests that fell to his lot!