When Poppy discovers that her father Frank is in prison, she is angry and bewildered. Seeing her wonderful, heroic father in a London prison looking pale, subdued and in prison clothes, she suddenly has a brilliant idea: to free her father. She and her friend Will invent all kinds of escape ideas for him - until she hears that he has been removed to a prison far away on an island, with five years to serve. But when the prison decides to stage a musical using professionals and prisoners, Frank is picked for the lead role. It is then that the questions begin...

The story of a feisty girl, and how she deals with the pain of her dad's downfall, has much to say about the harsh realities faced by the unlucky children of prisoners.