Jin Yue, the legitimate daughter of the Yehenala clan in the late Qing Dynasty, was the apple of Prince Duan's eye. She was well-dressed and innocent since she was a child, and the heirloom jade pendant was the only thing left by her mother. The dynasty was overthrown and the family was in decline. In exchange for the hope of "restoring the country", her biological father sent her to Japan and entrusted her to be educated by her "best friend" Matsumoto Kiyoshi. In a foreign country, Jin Yue lost her innocence and learned the skills of espionage, strategy, and fighting under Matsumoto's strict training. However, she was repeatedly subjected to racial discrimination and calculations. The protection of her maid Qingdai and her loyal servant Erdun became her only warmth. When she unexpectedly discovers that Matsumoto's "restoration" is just a cover for Japan's invasion of Northeast China, that her adoptive father's warmth is all used, and that her former best friend Lin Ruowei is actually a Republican agent, Jin Yue is completely heartbroken and transforms into a cold and ruthless "Dark Night Rose".
After returning to China after completing her studies, Jin Yue used her skills to deal with the warlords such as Lu Zhenting and Zhao Chengye, and took advantage of the conflicts between the parties to stir up trouble. At the peak of her power, Jin Yue discovered that she was just a pawn in a multi-party game. In the end, with Lu Zhenting's secret help and Shen Xiaochuan's desperate rescue, Jin Yue killed the Japanese.
When the dust settled, Jin Yue faced the judgment of history and her own redemption. She returned the heirloom jade pendant to her family and chose to go into seclusion with Shen Xiaochuan to spend the rest of her life making up for her sins. This is an elegy for a hero in troubled times, the collision between the righteousness of family and country and personal destiny, the choice of family, love and power, the intertwining of joy and sorrow, fully showing the struggle and awakening of a woman in the torrent of the times.
