Two elephant boys trick Dumbo into believing he has broken a chunk out of the moon. He flies through space to repair it, but is hooked by Wynken, Blynken, and Nod in their flying shoe. The trio guide him to a sky castle which is the home of a magic giant. They say he can give Dumbo enough green cheese to repair the moon. The giant keeps Dumbo in a birdcage until a mosquito helps him escape and return to Earth.; Pedro the mail plane runs out of gas. Dumbo takes the mail and is warned to watch out for the witch who is always trying to rob the mail planes.; Dumbo decides he wants to play the trumpet. When he goes to the Three Pigs' house his playing is so bad the pigs think he is the Big Bad Wolf in disguise. After learning he really is Dumbo, the pigs request a flight to get groceries in order to avoid the Big Bad Wolf.; Dumbo is invited to Thumper's masquerade party, but has trouble deciding on a costume.; The Big Bad Wolf threatens to nibble on Dumbo's ears.; Dumbo is blowing soap bubbles with his trunk, but Hector Hummingbird keeps popping them.