It is 1630, and a devastating plague has descended upon the city of Milan. Guglielmo Piazza and Giacomo Mora are depicted as two city's artisans (really only Mora, a barber, was an artisan while Piazza was a sanity officer). One day a woman accuses Piazza of being an untore (i.e. a greaser): a spreader of disease by anointing walls and furnitures with a pestiferous ointment. Ac...