XII century. Third Crusade. The great European commanders met a worthy opponent in the person of Sultan Saladin. The young knight Louis Chateau-Cryon and his foster brother, the blacksmith Edgar, by chance find themselves drawn into a dangerous adventure connected with the future marriage of King Richard I the Lionheart. Returning from a campaign in Europe, Richard is captured by one of his enemies. The insidious Templars and their comrades from the “Knights of the Grail” sect are striving not only to deprive Europe of a great warrior and monarch. Their goal is to destroy the very idea of reunification of Christian peoples. And this requires a mystical sacrifice! But the friends of King Richard - the brave knights Louis Chateau-Cryon, Cedric and Friedrich Telramund - did not leave their overlord in trouble...