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.

The film tells the story of Yan Ruyu (Yang Jinjie), a chivalrous woman who joins forces with scholar Song Shao and Jiang Fengyang, a Jin Yi guard. They must, to stop Liu Chong, a great eunuch, from usurping the throne and seizing power. Yan Ruyu's struggle between "righteousness" and "personal grudges" shows the fragile side of human nature and portrays a man of the jungle with weaknesses and human feelings.