Pablo Picasso's mural Guernica is on display during the 1937 International Exposition in Paris. Opposing sides of French politics, Charles de Gaulle and Maréchal Pétain, quickly realize that the painting contains clues to the whereabouts of the supernatural Spear of Destiny. Its occult power can change the outcome of the French Resistance, just as it has done in other conflicts throughout history. As Pauline's imagination begins to decipher the hidden symbols, Maréchal Pétain's secret agents are not far behind her. They are ready to capture the Spear at the most opportune moment, convinced that impulsive Pauline will betray her quest for the Spear.