October 1914: Winston Churchill, First Lord of the Admiralty, arrives in the besieged city of Antwerp to bolsters its defence and ensure that the wealth of a nation does not fall into German hands. After learning that a train packed with gold coins has been hidden behind enemy lines he gives orders for it to be retrieved. Captain John Quintrell, a Belgian officer known to Churchill for recently stealing a Zeppelin, is chosen to lead the mission. If Quintrell and his trusted band of British irregulars are to retrieve the train before Antwerp is overrun they must cope with the ill-trained military policemen that have been sent to escort them; evade the German Army; protect a refugee family; and stop the coins falling into the hands of rebellious Irish Marines. Meanwhile, a German secret society, the Ultima Thule Verband, sends an assassin to kill Churchill. When Quintrell discovers their plans he has a choice to make: does he save the gold or does he save Churchill...