In the hierarchical fictitious empire, intelligence and identity are the highest currencies above money. The low-level thief "Nightingale" Leah was captured in a black market transaction and was forced to be involved in a fatal game of power. She replaced Lin Wan'er, the daughter of the Lin family who was killed after running away from marriage, and became a stammering little maid to marry the Royal Bureau of Investigation on behalf of the family. Her fiancé is the murderous, suspicious and ruthless Chief of Investigation Cedric. In this perfect disguise game, as long as the personality breaks down (OOC), she will face the double pursuit of the chaebol and the investigation bureau.
In order to survive, Leah had to use the "thousand-faced pseudo-skin" left over from illegal human experiments in the slums. With just a drop of blood, she can perfectly copy anyone's fingerprints, vocal cords, and bone movements, at the cost of enduring crushing pain and extreme heat consumption. During the day, she was a cowardly, stuttering daughter of a plutocrat who couldn't even hold a cup, trembling and eating frantically under her fiancé's eyes; at night, she transformed into a spy with a thousand faces, wandering around the scenes of serial murders, chaebol secret rooms and faceless men's assassination scenes, stealing the highest-level imperial evidence.
When plutocratic conspiracies, royal secrets, and slum tragedies were intertwined, and layers of disguises were peeled off, Cedric finally forced her into a corner, with deep eyes: "You stole the Empire's SSS-level secrets, when are you going to steal my heart too?" This was a shocking situation with the entire empire's power as a bet, and the top prey had already willingly walked into her hunting net.
