During WWII in Pimlico, a tiny overlooked section of London, an unexploded bomb is accidentally set off, revealing a hidden cave full of treasures. While examining the hidden wonders found in the cave, a professor discovers a charter that says Pimlico is actually a part of the Burgundy section of France. Hilarity ensues when the people of Pimlico try to set up their own country, with the British government trying to pacify the situation.