As young Ahmed delivers butane gas to customers all over the city of Cairo, he thinks, I have a secret. All day long, as he maneuvers his donkey car through streets crowded with cars and camels, down alleys filled with merchants stalls, and past buildings a thousand years old, Ahmed keeps his secret safe insides. It is so special, so wonderful, that he can reveal it only to his family, only when he returns home, ony at the end of the day.