Desiring to lead an ascetic life during the 5th century, Paul abandons his bishopric in Italy and travels to Edessa. John realizes that Paul is a wonderworker, and so begs to accompany him on his travels. The two leave Edessa to visit the monks on Sinai, but instead of reaching their destination they are abducted and taken to Yemen by tree-worshipping Arabs. After a battle with a tree-god, they succeed in converting the Arabs to Christianity. During the journey home, they encounter a wandering band of monks among whom is a woman disguised as a man.