Giang Min is the producer of the program "Mystery Theater", which specializes in using supernatural phenomena as material. After his wife passed away, he has been living a single life. One day, a woman provided him with information about the "Spider Jungle", which aroused Giang Min's great curiosity, so he found this woman named Min Shu Yin. Min Shu Yin runs a photo studio near the Spider Jungle. She told Giang Min that the jungle is home to souls forgotten by people, and she narrated a sad legend to him. In order to learn more about this legend, Giang Min ventured into the jungle alone.
The next day, people found Giang Min seriously injured. Fourteen days later, Giang Min woke up from a coma and said something surprising: there are two bodies in the Spider Jungle. To solve this case, Giang Min's friend Detective Choi Sung Hyun also came to the Spider Jungle. As Giang Min had said, there were two already decomposed bodies in the jungle, one male and one female. The woman was exactly the radio station's Huang Xiu Ying, who had an ambiguous relationship with Giang Min, thus making Giang Min a murder suspect.
In order to prove his innocence, Giang Min and Detective Choi began an investigation together. They focused their investigation on the woman who provided the clue about the Spider Jungle, hoping to uncover the truth behind the legend of the Spider Jungle. However, the closer they got to the secrets of the jungle, the more it seemed like they were entering a huge maze, with more and more doubts and confusions arising. What secrets does the Spider Jungle hold? What is the truth behind the murder case?