I have a mouth, but I mustn't speak;
Ears, but I mustn't hear;
Eyes, but I mustn't see.

1800, Joseon (Korea). Homesick and orphaned sixteen-year-old Seol is living out the ancient curse: "May you live in interesting times." Indentured to the police bureau, she's been tasked with assisting a well-respected young inspector with the investigation into the politically-charged murder of a noblewoman.

As they delve deeper into the dead woman's secrets, Seol forms an unlikely bond of friendship with the inspector. But her loyalty is tested when he becomes the prime suspect, and Seol may be the only one capable of discovering what truly happened on the night of the murder.

But in a land where silence and obedience are valued above all else, curiosity can be deadly.