In Casablanca, a pair of former lovers meet again in North Africa under the shadow of World War II. Rick, an American who owns a night club, gets hold of two letters of transit, which permit the bearers to travel anywhere in Nazi-controlled Europe. He is shocked to later see his old lover Ilsa, who needs the letters so she and her husband, a Czech resistance fighter, can escape Casablanca. This classic film delves into the themes of love, betrayal, and war.