Dante Trilli, who has been teaching in his village school for about twenty years, wins a competition for Milan. Waiting for him is his childhood friend, where he is the janitor in the school where Trilli will teach.
In 18th-century Rome, impish aristocrat Onofrio del Grillo amuses himself by playing pranks on all sorts of people — his reactionary family and fellow nobles, the poors, the French occupiers trying to modernize society, and even the Pope himself.
Kids from a huge apartment complex in Rome form a secret society to unite their forces and get back at the nasty adults who 'oppress' them, playing pranks on them to expose their weaknesses.
Arturo Meraviglia is a struggling impresario who has to take care of Gioele and Rebecca, two children "inherited" by an old uncle. When he realizes that little Gioele has superpowers, his luck changes.