Complex sentence: The plot follows the eponymous narrator, sir Max, as he leaves our "real" world for phantasmagoric fantasy city of Echo to become a member of special service that controls the use of magic.
Split into simpler sentences: The plot follows the eponymous narrator, sir Max, as he leaves our "real" world for phantasmagoric fantasy city of Echo. There, he becomes a member of special service that controls the use of magic.