The curse of the ghost cave intensified again. Hu Bayi, Fatty Wang, and Shirley Yang obtained half of the map of the Yunding Heavenly Palace of the Eastern Xia Kingdom from Chen Xiazi, and rushed to the depths of Changbai Mountain to find the fragments of the Muchen Bead. The three of them relied on gold-touching feng shui, mountain-moving mechanism skills and close combat skills to break through the entrance of "Longmian Bingyan" and go deep into the third-level underground palace - the shamanic five-element array in Bingpo Xuan Palace, the Nine Dragons Carrying Corpse Coffin in Dragon Pattern Palace, and finally the secret demon-suppressing bureau in the core Dragon Palace. On the way, they encountered Professor Sun, the Black Jin tribe of the Shouling tribe and Faqiu remnant who coveted the power of demons, and they also revealed the truth about the Tiangong's suppression of the Changbai Mountain ice demon. When the Muchen Bead (resolving the curse) conflicts with the mission of suppressing demons, the Iron Triangle sticks to their friendship in desperate situations, takes the decision to protect the common people, and continues to write the legend of Captain Mojin.
