Florence belongs to the young Peter, the fourth Medici to govern one of the most admired cities in the world. The boy reigns in despot without worrying about the interests of his people. He ignores the advice of his brother, John, as of his cousin, Jules, who from Rome tries to fight against the control of the Borgias over the Church. Peter does not see the danger posed by the monk Savonarola. The Dominican prophet inhabited by a powerful faith, visionary for some, crazy for others, uses all means to drive out the Medici from Tuscany. A new fight for Florence is engaged, the Medici on one side of the battlefield, the new ideas and the faith of the other. Borgias are not the only arbiters of this conflict... The most lively spirit of this century seems to be determined to take part in the destiny of his homeland: Nicolas Machiavel.