During the period of the Republic of China, the reclusive descendants of Guanshan Taibao were ordered to investigate a case and solve the mystery of the "Nine Pavilions" of the Qianji Ancient Palace hidden under the mine disaster....

This film tells the story of Lin Xiao, a member of the Ming Dynasty navy. In order to prevent the East Sea pirates from obtaining the treasures left behind by their ancestors, Lin Xiao courageously embarks on an unknown sea voyage, exploring uncharted waters. During the voyage, he engages in a battle of wits and courage with cunning pirates and ferocious giant octopus sea monsters....

In the third year of Jianwen, Li Wu, a petty thief from Ji'nan Prefecture, saw Wang Kegong enter Nanjing with his family's fortune. He thus stole the name card of Li Dongfang, a famous clothier, to infiltrate Wang Kegong's house, in order to steal his fortune and become rich overnight. Unexpectedly, Li Mu got entangled in a dispute over the firearms of the former dynasty that revolved around the Fish Lock, and Li Mu, who was initially an outsider, became the holder of the Fish Lock, caught in the center of the whirlpool. As a child, Song Zhen, the child who rescued Li Wu from the imperial prison, has now become Lu Zheng, an Embroidered Guard and Li Wu's colleague, but they do not recognize each other; Shu Tang, a girl who was once in the same cell with Li Wu, has become an assassin, and has become a spy couple with Li Wu to complete the task. The darkness and cruelty of the dynastic strife put the feelings between the three to the test in a series of intrigues like locks. When the moment of dynasty change comes, all the battles and unresolved mysteries will come to an end....

In the third year of Jianwen, Li Wu, a petty thief from Ji'nan Prefecture, saw Wang Kegong enter Nanjing with his family's fortune. He thus stole the name card of Li Dongfang, a famous clothier, to infiltrate Wang Kegong's house, in order to steal his fortune and become rich overnight. Unexpectedly, Li Mu got entangled in a dispute over the firearms of the former dynasty that revolved around the Fish Lock, and Li Mu, who was initially an outsider, became the holder of the Fish Lock, caught in the center of the whirlpool. As a child, Song Zhen, the child who rescued Li Wu from the imperial prison, has now become Lu Zheng, an Embroidered Guard and Li Wu's colleague, but they do not recognize each other; Shu Tang, a girl who was once in the same cell with Li Wu, has become an assassin, and has become a spy couple with Li Wu to complete the task. The darkness and cruelty of the dynastic strife put the feelings between the three to the test in a series of intrigues like locks. When the moment of dynasty change comes, all the battles and unresolved mysteries will come to an end....

The young lady of the Luo family, Luo Yining, who grew up in a separate residence, was never constrained by formalities and rites. She repeatedly stood up for her "Third Brother" Luo Shenyuan, who was often bullied by others. Over time, she discovered that despite his seemingly downtrodden appearance, Luo Shenyuan was both intellectually and physically capable. Having experienced heartbreak, Luo Yining no longer wanted to be confined within the walls of her home or controlled by others. She was determined to break free from old traditions and use her talents to start a business and achieve independence. Luo Shenyuan, who found himself in a miserable position within the Luo household, had been relentlessly seeking the truth after his mentor was falsely accused and killed. He deeply appreciated the familial warmth that Luo Yining brought into his life. When Luo Yining faced difficulties during the opening of her business, he did everything in his power to support her. Gradually, Luo Yining came to understand the importance of Luo Shenyuan's mentor to him, and their bond grew stronger, with affection blossoming between them. With Luo Shenyuan’s help, Luo Yining not only brought the murderer of her biological mother to justice but also managed her business smoothly and successfully. Encouraged by Yining, Luo Shenyuan participated in the imperial exams and emerged as the top scholar, eventually uncovering the truth behind the wrongful case from years ago. In the end, they successfully cleared the name of his mentor and brought the culprit to justice. The two of them then lived a peaceful, worry-free life together....

The young lady of the Luo family, Luo Yining, who grew up in a separate residence, was never constrained by formalities and rites. She repeatedly stood up for her "Third Brother" Luo Shenyuan, who was often bullied by others. Over time, she discovered that despite his seemingly downtrodden appearance, Luo Shenyuan was both intellectually and physically capable. Having experienced heartbreak, Luo Yining no longer wanted to be confined within the walls of her home or controlled by others. She was determined to break free from old traditions and use her talents to start a business and achieve independence. Luo Shenyuan, who found himself in a miserable position within the Luo household, had been relentlessly seeking the truth after his mentor was falsely accused and killed. He deeply appreciated the familial warmth that Luo Yining brought into his life. When Luo Yining faced difficulties during the opening of her business, he did everything in his power to support her. Gradually, Luo Yining came to understand the importance of Luo Shenyuan's mentor to him, and their bond grew stronger, with affection blossoming between them. With Luo Shenyuan’s help, Luo Yining not only brought the murderer of her biological mother to justice but also managed her business smoothly and successfully. Encouraged by Yining, Luo Shenyuan participated in the imperial exams and emerged as the top scholar, eventually uncovering the truth behind the wrongful case from years ago. In the end, they successfully cleared the name of his mentor and brought the culprit to justice. The two of them then lived a peaceful, worry-free life together....