Florence is thrown into panic by what the people of Florence believe to be a destructive, fire-breathing demon. But this is no demon. It's a mechanical man, designed by Leo. And Piero has had it built as part of a clever scheme to overthrow the Duke. Leo now has to meet his biggest challenge. What follows is a dramatic and violent confrontation between the humble artist's apprentice and Piero de' Medici, the richest and most powerful man in the city. And poor Lorenzo has to choose between loyalty to his father - or to his friends.