The friendly ghost of the Black Castle follows Babar the elephant, along with his family and friends, back to Celesteville to spend some time with them.

Babar and his family are abducted and taken by rocket ship to an unknown planet where the residents are very hospitable and there are many interesting sights to see.

Babar's children Arthur, Pom, Flora and Alexander write a letter to Father Christmas to ask him to visit Celesteville at Christmas.