Yan Yangyi and Bao Hulu strayed into the strange Underworld Town, where they can only enter but cannot leave. Anyone who leaves without authorization will die mysteriously. Although Yan Yangyi doesn't believe in the horror legends all over Yin-Yang Town, he frequently encounters strange things. Will he be able to survive time after time? What was even more unexpected to Yan Yangyi and Bao Hulu was that under the curse, the spooky town has an amazing secret behind it...

The film mainly tells about the bizarre cases in the Lop Nur area during the Republic of China. Shi Chuqi, the president of the mysterious incident investigation organization "Seven Sons", led the team members to solve the mystery. The film focuses on many mysterious and unresolved events based on elements such as exploring the unknown and revealing the truth. It also adds science fiction elements of ancient space civilization to satisfy the audience's curiosity.

"4 Idiots" tells the story of several rural people who went to live in the city and then struggled. Everyone has a history of blood and tears, but it is also an inspirational history. Going to Beijing for fame and fortune, encounter all kinds of strange and unreliable journeys along the way, and finally find the true meaning of life.

There was once a man named Yin XIII, who was known for helping the suffering. According to rumors, he was good at solving supernatural phenomena and knew how to drive away evil spirits. Yin saw what ordinary people could not see. One day, he was invited into the Lin family home to solve the mystery of the ghost footprints.

In China 1644 a young man is castrated/dismembered against his will. However, he gains a somewhat defect super power. Much later he's chosen to escort two concubines on a long, adventurous journey to Beijing.