While driving to the Spanish border, Madeleine splashes mud onto Tom Bradley (Gary Cooper), an American automotive engineer vacationing in Europe. Then as they approach the border, her car's horn control sticks "on", to the annoyance of the customs officers. Tom fixes it and they go into the office together. Luggage and purses are being inspected, so she decides to hide the pearls in his jacket pocket. On the road, she pulls ahead of Tom, then disables her own car so that he will have to give her a lift.