Piero hosts a party for the celebrated charioteer Giovanni Salvatore which is gate-crashed by Lisa and Leonardo,posing as staff,and Machiavelli,passing himself off as Count Lampedusa. Piero sees through his disguise and has him imprisoned but Leonardo saves him thanks to a couple of his recent inventions. However the false count has persuaded Giovanni to give up his sport to undertake charity work - not a popular decision among his Florentine fan base.