Deep in the Qinling Mountains, ranger Zhang Tieniu rescued the mysterious woman Bai Qiqi with a bronze bell tied to her wrist in a blizzard. She is dressed in the costumes of the Republic of China and is familiar with ancient Qinling roads and traditional herbal medicines, but knows nothing about modern society. Her words and deeds are intertwined with dialects and strange secrets from the Anti-Japanese War - she can accurately predict dangerous areas, is familiar with the old stories of traps set by hunters eighty years ago, and even mutters memory fragments of "the 32nd year of the Republic of China" in a coma.
Tieniu discovered that Bai Qiqi's various anomalies coincided with the legend of the "mountain guardian" spread in the Qinling Mountains. The medicine bag, tattoos and bronze bells she carried with her all pointed to a secret history of the Anti-Japanese War buried in the wind and snow: biological and chemical weapons files left by the Japanese army, a Republic of China tombstone engraved with her name, and suspected experimental traces of Unit 731, gradually outlining her past as a member of the "Qinling Rangers".
When modern poaching collides with historical conspiracies in the snowy mountains, when villagers' rumors of "Fox Fairy" overlap with the disappearance of the archaeological team, Tieniu and Bai Qiqi gradually uncover the paradox of time and space deep in the Qinling Mountains while guarding the takin and tracking down the tomb robbers - is she an anti-Japanese war agent trapped in the amber of time, or is she the incarnation of a "mountain spirit" bred in the Qinling Mountains? The clear ringing of the bronze bells contains the code for the transfer of cultural relics 80 years ago, as well as the eternal oath to protect this land.
In the mist of the snowy mountains, the gears of history and reality began to mesh. A Qinling legend about ecological protection, cultural inheritance and human redemption kicked off in the collision of old folk songs and modern technology.
