The narrative unfolds in a pastoral landscape where shepherds, bards, and rural communities witness lyrical songs, storms, and turbulent events that culminate in the abduction of a young woman and the arrival of her lover at a secluded grotto. Episodes mix descriptive country scenes, pagan and classical imagery, and encounters with a magician and powerful natural forces. Framed as a purported translation of an ancient Welsh romance and divided into several books, the work alternates poetic passages, dramatic set-pieces, and prefatory reflections on authorship, producing a blend of pastoral lyricism, antiquarian framing, and romantic action.