This fictional narrative explores post-Roman Britain's history, focusing on an obscure Latin manuscript discovered by a monk in 1494. This manuscript, including a version of *Historia Regum Britanniae*, chronicles Cinna Cassia, the Queen of the Britons. The monk learns about Cassia, who married Lily—founder of Londinium's first schools. His writings in 1518, which acknowledged same-sex relationships, led to his prosecution by religious authorities. Despite the king's interest, the monk was executed, and all copies of his work were ordered destroyed, highlighting the era's intolerance towards his subject matter.