During a battle in the Crown of Aragon town of Zaragoza (Zaragoza) during the Napoleonic Wars, an officer retreats to the second floor of an inn. He finds a large book with drawings of two men hanging on a gallows and two women in a bed. An enemy officer tries to arrest him but ends up translating the book for him; the second officer recognizes its author as his own grandfather, who was a captain in the Wallonia Guard.