London, 1937. Mrs Laura Henderson, a woman of wealth and connections, has just buried her beloved husband. And now she's bored. Friends suggest she finds a hobby and to their amazement she buys the Windmill Theatre. When business begins to fail she comes up with a new idea to get the crowds back - put naked girls on stage! But as the bombing of London begins, the government threatens to close the theatre. Mrs Henderson's fighting spirit is revealed - and so is the secret that drew her to buy the Windmill in the first place.