During the period of the Republic of China, detective Zhang Yiren was ordered to investigate a bizarre murder case in the town of Taiping. The villagers believed it to be the vengeful spirit of a female ghost seeking revenge. As Zhang Yiren delved into the investigation, more people were killed, and the deaths were horrifying. Eventually, with the help of a local beggar named Gouzi, Zhang Yiren finally brought the culprit to justice. However, during this process, he also sensed that there might be hidden secrets behind the series of murders....

In 1932, a series of bizarre murders occured in Beihai City. During police detective Long Cong's investigation, he discovers that the murderer uses illusions to kill people under the guise of ghosts and monsters. Eventually, Long Cong, with the assistance of female reporter Hua Ling, brings the murderer to justice, but the hidden truth behind it is too much for him to accept.........

In 1925, a giant crocodile escaped from its cage by accident and wreaked havoc in the city of Beihai. The hunter Qi and his disciple Tian Sheng were invited by the sheriff to go to Beihai. The master and disciple work together to capture the crocodile. But to their surprise, a bigger crisis is looming over them…...