London 1939: Bradley Hardacre has much to gain from another war and prevents his son Austin from returning to the Prime Minister with a peace document from Germany. Lady Patience refuses to allow the threat of war to interfere with the Annual Ball at Lancaster House.

When Bradley Hardacre hears of the government's plan to scrap the production of his latest invention, the midget submarine, he uses his contacts in the civil service to get an announcement in the House of Commons that the contract has been extended and that his son Austin has volunteered to test the new naval devices.

When Bradley Hardacre hears of the government's plan to scrap the production of his latest invention, the midget submarine, he uses his contacts in the civil service to get an announcement in the House of Commons that the contract has been extended and that his son Austin has volunteered to test the new naval devices.

Bradley Hardacre and Winston Churchill share their opinions on how the war is being conducted. Jack Fairchild persuades Lady Patience to finance his scheme for the production of the self-sealing saddle valve. Matthew is prevented from marrying Charlotte.

Bradley purchases a country estate. Inspector McDuff has new evidence implicating Matthew. Jack Fairchild reclaims Charlotte's child and offers to marry her. Matthew is in France and is accused of selling the artificial legs he is in charge of. Morris is discovered relaxing on the beach at Dunkirk.

Bradley prepares the grounds at his new country estate for a cricket match. Morris and Matthew meet up in France and attempt to escape the Germans by stealing a German plane. They eventually make it to England and as they fly over the cricket pitch they send a message attached to Morris's golliwog.