While working on a class assignment in the ancient City of David, Uri and Yoav discover they are being followed by antiquity thieves. The boys get into a hair-raising chase through a dark, wet tunnel dug by king Hezekiah more than 2,600 years ago. They know the robbers have taken a priceless golden bell from the archaeological excavation run by Uri’s uncle- and now it’s up to them to get it back. Under the watchful eye of the renowned archaeologist Ronni Armoni, Uri and Yoav become immersed in the biblical world of King David and get a close-up view of the exciting uncovering of the lost city of ancient Jerusalem