When an unexploded WWII bomb is accidentally detonated in Pimlico, it reveals a treasure trove and documents proving that the region is in fact part of Burgundy, France and thus foreign territory. The British government attempts to regain control by setting up border controls and cutting off services to the area.
This tale of intrigue finds Valentina Cortese involved in an assassination plot. She helps the police apprehend the conspirators after an innocent bystander is accidentally killed.
The love that Judy, a young painter, feels for Alan, a promising doctor to whom she is engaged, falters when Bill, an old friend, suddenly appears.
