As most of the kids at her age, the 7-year-old Anna sleeps better with a toy in her hands. In this case, it is Sophie, the favourite doll of the little girl. However, when leaving her family’s holiday house, Anna forgets to take Sophie with her. Worried whether all is well with her lovely doll, Anna realises that her parents will not agree to drive back to the house in the middle of the night. While thinking about Sophie, Anna unexpectedly hears a buzz sound. It appears that the sound comes from Zanzibar, a cute yellow airplane and its crew: Captain Bimse and co-pilot Goggeletten. Taking along Mr. Johnson, Anna’s loyal teddy bear, the new friends embark on a special adventure. Their mission is to go find Sophie and reunite the doll with her girl. Being an adaptation of Bjarne Reuter's children book, the film is a mix of live action, animations and puppets.