During the 1940 Blitz, Charlie, Carrie, and Paul are evacuated from London to the small village of Pepperinge Eye. There, they are placed in the care of Miss Eglantine Price, who agrees to the arrangement temporarily. They attempt to run back to London, but after observing Miss Price attempting to fly on a broomstick, they change their minds. They learn that she is an apprentice witch, who is learning witchcraft through a correspondence school with hopes of using her spells in the British war effort. In exchange for their silence, she offers them a transportation spell. She casts it on a bedknob that Paul removed from a brass bed in their room, and adds only he can work it since he's the one who handed it to her. When reattached to the bed, it will travel anywhere he asks.
At the end of the film, the Nazis have planted explosives in Miss Price's house. This destroys the source of her magic and she can no longer be a witch. Charlie and Carrie are dismayed that there will be no more adventures, but Paul says he managed to salvage one enchanted item that still works. The final scene shows Paul grinning as he pulls the magic bedknob from his pocket.
