The 30-year-old policewoman Su Pengpeng encountered an accident during an ordinary police dispatch and traveled to a country she had never heard of - the Kingdom of Qian. She became the daughter of the Duke of Qi who had just experienced family destruction. There, she met Yu Cheng, the proud disciple of the leader of the Biyuan League, Ling Shangbai, the successor of Yaowang Valley, the young general Qingfeng, and Gu Nian, the successor of Runsitang. The young team gathered together to help the weak and solve strange cases in Daqian. However, they did not expect that as various cases were solved, an invisible hand seemed to push them to the court. The vests of the young people were also exposed. They could no longer just live a free and easy life in the world, but also had to fight to protect their homeland.
