In the very beginning, a crowd is chasing Giacomo. They think that he is a thief and that he stole something. They ended up cornering him on the roof of the Cathedral, where he then decided to jump off. Then Leonardo saves him.
Leonardo fights the Robbers
After Giacomo was saved, Leonardo takes him to his home so that Caterina can take care of him. Seven weeks later, Leonardo tells Giacomo that he will let Giacomo become his servant.
The Duke gets upset
"You will finish the Last Supper by the spring when the Pope comes."
"And my portrait."
7 years after Leonardo rescued Giacomo, Giacomo goes to a fight against the apprentices with his friends. There, he and his friends insult the apprentices and fight them.
The Dukes meets the "Medusa"
"How dare you insult us with this monstrosity! I am outraged!"
Giacomo comes home when he sees that the door is open. Then he hears crashing noises from Leonardo’s study and he sees 2 men in black running out. Then Leonardo comes out, grabbing Giacomo and pulling him to an alley where Leonardo pulls out a powder which blinds the robbers, then he ties them up.
The Duke called Leonardo to see his progress with the Last Supper. When he sees that very little has been made, he tells Leonardo that he must finish the painting by the spring, when the Pope comes. He also tells Leonardo to finish Lucrezia’s portrait.
Leonardo told Giacomo to go and give the Duke Lucrezia’s portrait. But when he does, the Duke and Lucrezia see that the painting is of Medusa instead of Lucrezia. The Duke then becomes incredibly outraged.