Two people are lost in the dessert. They are dying from hunger and thirst. Finally they come to a high wall. On the other side they can hear the sound of a waterfall and birds singing. Above, they can see the branches of lush trees over the top of the wall. Their fruit look delicious. One of them manages to climb over the wall and disappears down the other side. The other, instead, return to the desert to help other lost travelers find their way to the oasis.