Liu Rushi is the daughter of a pawnshop owner. She learned the art of treasure appraisal from her father since she was a child. Her father was framed to death and the family property was taken away from her. She lived on the street and was taken in by an old beggar, where she learned the art of stealing. Ten years later, she changed her name to "Liu Rushi", returned to the capital as a businesswoman, and opened an antique store, specializing in acquiring treasures with shady origins. Her real purpose is to find out the murderer who killed her father through this channel. Duan Tianya is the chief arrester of the Six Gates. He is selfless and has been pursuing the case of smuggling cultural relics underground in the capital. The two don't know each other without fighting. One wants to investigate the case and the other wants revenge. Their goals seem to be the same but they hinder each other. During the investigation, Liu Rushi discovered that the case involved many powerful people in the court, including the prime minister. She worked step by step to collect evidence, but she fell into danger several times. Duan Tianya went from suspicion to trust, and then to help. Sparks sparked between the two on the edge of life and death. In the end, Liu Rushi used an ancestral golden knife as bait to lure out the real murderer behind the scenes, and revealed all the truth in a thrilling confrontation. After her revenge was avenged, she wanted to continue her antique business, but Duan Tianya took out a marriage certificate and said it was an agreement left by her father during his lifetime. It turned out that their father had arranged a baby wedding for them a long time ago, but he never had time to tell them. Liu Rushi looked at the yellowed marriage certificate, laughed and scolded: "You idiot, you took it out after hiding it for so long."