During the Italian Renaissance, the handsome artist and craftsman Leonardo da Vinci (Tom Riley) was a teenager. Although he was arrogant, he had a clever mind. At present, he was entrusted by Lorenzo (Elliot Cowan), the governor of the Republic of Florence, to make an Easter celebration device. He was promoted to a military engineer for his outstanding performance. At the same time, Leonardo da Vinci had an affair with Lorenzo's mistress Lucrezia Donati (Laura Haddock). A mysterious Turk told him that he must find a mysterious book-"The Book of Leaves". And because of this book, the Pope's nephew and right-hand man-Count Girolomo Realo (Blake Ritson) also came to Florence from the Vatican...