Little Tobia has waited for a long time to attend the prodigious Master Aligi and his puppets' show. When the opportunity arises to go into the puppeteer's camper and touch those fabulous characters with his hands, the boy doesn't think twice, especially since it is Katia, a girl toward whom he feels incomprehensibly attracted, the one to suggest it. Entering that world would be a prelude to an endless nightmare.