In the troubled times of the Republic of China, the stand-in female assassin and the warlord's son went from scheming against each other to trusting each other in life and death, and worked together to find a path to redemption in the broken mountains and rivers.
Background of the times: From 1927 to 1937, the "golden decade" between the establishment of the National Government in Nanjing and the outbreak of the Anti-Japanese War was actually very turbulent.
The warlords' melee, the confrontation between the Kuomintang and the Communist Party, and the Japanese infiltration: the three forces overlapped in the important town in the south of the Yangtze River
The heroine is the "Shadow" - she has been trained as a stand-in for everyone's ladies since she was a child, and is responsible for dying for the real target at critical moments.