It’s Carnival in the city! Lalla and Skali want to celebrate too! OK, but what costumes are they going to wear? It’s easy! All they have to do is go to the theatre’s costume department and something magical will be sure to happen! A sparkling mask, a bit of imagination, and our heroes, with a little help from the music of the La Scala chamber musicians, are off on an adventure through time and space to celebrate carnival at La Scala with the most beautiful mask of all: a smile!