Rusich, a former mercenary of the Latin Emperor Baldwin, by the will of fate becomes a knight and sovereign lord of the Frankish Morea. He takes part in the war with the Romans, marries the daughter of the Duke of Athens and prepares to inherit his title. But his life collapses overnight. After the death of his wife and newborn son, he becomes a Templar and spends many years in Palestine, where for a wound on his face he receives the nickname Marked Marshal. In our time, his distant descendant, the Kiev historian Dima Solarev, was hired by the hierarchs of the Kiev Pechersk Lavra to unravel the mystery of the theft of the Shroud of Turin , together with new friends and companions - former bandit Sergei and museum robber Francesco - decides to take possession of the treasure on his own. The “quest” left by Dmitry in the 13th century leads them first to the Templar Commandery of Mosinople, then to Istanbul and finally to Cyprus. Due to Dima's unfortunate mistake, enemies attack their trail, and friends have to flee... The novel is a direct continuation of the crypto-historical action film "Legacy of the Templars."