There is a giant sinkhole in Guangxi called the Eye of the Underworld. According to folklore, it is the door to the Yin and Yang Realms. What's more, it is rumored that the ancient book "Long Guan Lu" containing strange recipes from past dynasties is hidden in the tiankeng. Ten years ago, during an expedition to the Eye of the Underworld, the entire expedition team headed by exploration expert Zhang Xiaotian died here. Ten years later, Zhang Xiaotian’s son Zhang Feng received a special express delivery, and the story unfolded...
Bassong, the leader of Southeast Asia's largest human trafficking organization, hosted a banquet in his private club to host the leaders of criminal organizations around the world. Yunzhi, Ruxin, Ruyi and the heroine Yamei successfully sneaked into the club to perform tasks. Yamei's target was the boss Basong, but due to an accident, she could only switch with Yunzhi. In the process of carrying out the mission, Yunzhi was almost unpredictable, but fortunately Yamei arrived in time. The criminal organization alarm sounded. In the melee, Yamei rescued Yunzhi. In order to cover the departure of her companion, Yamei detonated the bomb and disappeared into the flames.
Young scientist Bai Jingtian leads a group of people into the vast mountains in search of a murderous hydra. He thought it was just an ordinary scientific expedition. Unexpectedly, many dangers will follow one after another.