Fan Reka, a blind weaver employed in the Imperial Harem, becomes a relentless solver of enigmatic events, including murders attributed to the dreaded "Mermaid's Curse" and a suicide linked to the elusive "Plum Spirit." Amidst these perplexing cases, a startling revelation emerges- the Emperor is not one single person but a pair of twins masquerading as one. This revelation sparks a movement advocating for a single Emperor, endangering the very fabric of the imperial harem.