At the height of the Roman Civil War, a young Cleopatra (Vivien Leigh) meets a middle-aged Julius Caesar (Claude Rains), who teaches her how to rule Egypt.At the height of the Roman Civil War, a young Cleopatra (Vivien Leigh) meets a middle-aged Julius Caesar (Claude Rains), who teaches her how to rule Egypt.At the height of the Roman Civil War, a young Cleopatra (Vivien Leigh) meets a middle-aged Julius Caesar (Claude Rains), who teaches her how to rule Egypt.