Topo Gigio, the renown animated puppet created by
Maria Perego, embarks on a rocket of his own invention in the company of his inseparable Rosy and a new friend, Giovannino (a small worm that emerged from an apple). They leave for the Moon, but encounter unexpected difficulties and they end the journey in the middle of an amusement park, where however, the little hero has the opportunity to show off his cunning and courage in defending Rosy from the evil intentions of a bad wizard. The adventure will end in the happiest of ways.