Arthur Parker is a music salesman with a song in his heart but trouble in his fortunes. On a trip to Gloucester, he meets two people who will change his life: a strange 'gentleman of the road', who plays hymns on a piano accordion and a beautiful young teacher. At home, Arthur's wife Joan waits apprehensively.

As Eileen tells her schoolchildren their favourite fairytale, song salesman Arthur, Prince Charming in the tale, is coming back to make her his princess. He finds her in a magical forest. His wife Joan wonders if she has left him for good and the mysterious accordion player still haunts the story.