1907, a murder case occurred in Tianjin. When two British soldiers raped a woman in China, they were killed by a Jianghu woman known as the "Blue Witch". The British consulate surrounded the Tianjin county government under the pretext of force. At that time, Tianjin people were in a panic, and Sino-British relations suddenly became tense. Those who returned from studying in England were ordered to trace the murderer, not only to find out that Ann was guilty of the crime of "blue enchantress".

It turns out that more than ten years ago, Gong Yan's four knife-wielding guards, Lantian Xu, Lu Laoshou, Dongfang Jun and Fan Zhuzhai, sent eight horses to the palace at the orders of the emperor, but were stopped by Cixi. In a fight, Lantian Xu was sentenced to death, the other three were exiled by the Queen Mother, and the whereabouts of eight horses were unknown.

After the mysterious disappearance of the Eight Horses, both the Emperor and Cixi sent their confidants to look around, but after more than ten years, the Eight Horses remained as stone and there was no news.

In recent days, Fan Wenzhai's adopted son, Fan Wenxin, exhibited Fan's family heirloom, Eight Horses, in a beauty contest. However, the two enchantresses fought each other, and the eight horses that had just surfaced disappeared under the eyes of the public. So around the search for the lost eight horses, a killing began.

The emperor sent his cronies to extort money, and Cixi used the "Motome Gate" expert to observe the dark side. Japanese and British people in China also fish in troubled waters and profit from it. At that time, they were waiting for Wei Lu Laoshou and others with knives to fight for blood and kill each other, and officials and hooligans at all levels were unwilling to wait for others, fanning the flames. Without killing, all passers-by want to keep the eight horses for themselves. Suddenly, the palace moved inside and outside, and there was a blood shed. In city by the sea, Beijing and Tianjin, Ji Min, a chivalrous woman in the Jianghu, is imprisoned from time to time, and the treasure of the town house is inseparable.

Oriental Hong Fei, a private detective, made his first outstanding achievement in solving the case of British soldiers raping women in China. He was appointed by North Korea as an imperial envoy to investigate the case of losing eight horses. He hit it off with Zhao Zhuoya, a teacher from Metropolitan Primary School, but gradually discovered that this gentle female teacher was actually a martial arts expert with unique skills. What shocked him even more was that this Jianghu Xia woman turned out to be the confidant killer of the Queen Mother and the enemy of the revolutionaries. After Blue Demon Ji captured Eight Horses, she immediately caused people from all walks of life to kill her again and again. The mysterious eight horses have changed hands several times, forged and counterfeited many times, turned upside down, and ghosts and gods are uneasy. Japanese spy Yamaguchi often suffers from love and hate. Adventure director Yang's fictional "honey trap" was seen through by his colleague Zhao, and his master Wang Sao joined the alien party. Lu Fengxian's unrequited love has no result.

At that time, Wei became an ally by killing blood. Today, he died for the treasure map, but this usually taciturn old janitor turned out to be the leader of the revolutionary party.