Based on a famous fairytale by Yuri Olesha. A fairy tale film about the clever tightrope walker Tibule, who fights alongside the armorer Prospero and all the working people against the tyrants, the three Fat Men, who rule the state until the young heir Tutti comes of age. The freedom fighters are aided by the kind Dr. Gaspar and the brave acrobat girl Suok, who has to pretend to be a doll to sneak into the palace and free Prospero.