A knight's desperate plea for an heir sets in motion a perilous bargain with a mysterious woman. Sir Gwalchmai, a knight of King Arthur's court, is plagued by the childlessness of his wife, Guenevere. He encounters the Corrigan, a fairy woman of the woods, who offers him a solution in exchange for a dangerous promise. The narrative explores themes of love, sacrifice, and the consequences of pacts made with supernatural beings, all within a framework inspired by ancient Celtic legends.

This early work by J.R.R. Tolkien, previously unavailable for decades, offers a significant glimpse into his developing mythopoeic imagination. Its publication alongside related 'corrigan' poems and Christopher Tolkien's prefatory note allows for a deeper understanding of Tolkien's engagement with Celtic folklore and his poetic artistry. The inclusion of supporting material provides valuable context for scholars and enthusiasts alike, shedding light on the influences and themes that would later permeate his more famous works. The collection is recognized for its scholarly presentation and its contribution to the understanding of Tolkien's literary development.