In 1963 an unknown housewife and teacher from the Midlands, Mary Whitehouse, embarked on a mission to clean up British television. Her crusade led her into battle with the man she held responsible for a tide of 'filth' - Sir Hugh Carleton-Greene, Director-General of the BBC. With Julie Walters starring as Mary Whitehouse and Hugh Bonneville as her arch enemy, this is a drama inspired by real events that brings life to the battle for Britain's morals.