Later that night at the festival, during their final number, the von Trapp family slip away and seek shelter at the nearby abbey, where Mother Abbess hides them in the cemetery crypt. Brownshirts soon arrive and search the abbey, but the family is able to escape using the caretaker's car. When the soldiers attempt to pursue, they discover their cars will not start as two nuns have removed parts of the engines. The next morning, after driving to the Swiss border, the von Trapp family make their way on foot across the frontier into Switzerland to safety and freedom.