Two Bedouin brothers roughhouse around a well in the Arabian Desert. Their father has recently passed, and Hussein (Hussein Salameh), the warmhearted older brother, is mentoring young Theeb (Jacir Eid, Salameh's real-life cousin). One night, a British Army officer appears. Theeb is curious about a mysterious box he's carrying. The officer needs a guide to escort him to the next well. Following Bedouin custom, Hussein agrees to help. The next morning, they take off, unaware that Theeb -- our mischievous guide is trailing close behind.