Rising artisan Leonardo da Vinci is commissioned by the powerful Medici to create an Easter spectacle in Florence. After some maneuvering, da Vinci is hired to engineer war machines. A mysterious Turk intrigues Leonardo.
Leonardo continues his quest for the Book of Leaves. The Pope’s nephew arrives and meets his spy. Leonardo’s war designs fail, causing a rift with the Medicis. The Pope learns of Leonardo’s prowess.