Timid and naive, manhwa artist Chun Su-ro tries to live a comfortable and quiet life. So it’s completely by accident that she stumbles upon a murder and becomes entangled in an elaborate criminal scheme with 50 billion won on the line. She finds herself dealing with suspicious policemen, crime bosses, drug traffickers, and even discovers romance with a top spy. Faced with danger and drama, Su-ro is forced to transform into a crime queen and to join her enemies.