Set in the early years of the Republic of China in Tianjin, a series of mysterious deaths among dozens of sewer workers leaves the people in a state of panic.

Thousands of years ago, the green snake gradually gained enlightenment under Daoqing, and came to want to stay with Daoqing. However, because of its obsession with Daoqing, Daoqing entered the tribulation of reincarnation and suffered a lifetime of death. In order to resolve Daoqing’s calamity, the Green Snake has been searching for Daoqing’s reincarnation for hundreds of years...

A shameful period in Taiwanese history provides the backdrop for this emotional drama from writer and director Yonfan (aka Yang Fan). In 1949, in the wake of the 228 Incident (in which anti-government protesters launched a rebellion that was violently put down by authorities), Taiwan came under martial law, and through much of the 1950s brutal reprisals against suspected communists were commonplace. During the years of the "White Terror," thousand of supposed dissidents were killed, imprisoned or simply disappeared at the hands of the military police.

The innocent children in the village are happy to play in the village, singing nursery rhymes. Such a scenario no longer exists. The village children disappeared out of thin air, adults panicked, the village's one-eyed old yin and yang mother-in-law said that the legendary Tiger Gospel again appeared sixty years later. As the case is unusual, the police sent out excellent young police officers.

Talented demon hunter Li Xiyuan who was kidnapped by a dragon when he was young and set out on a journey to become a true "Dragon Master". He meets Heilong Sansheng unexpectedly, and at the same time, caught in the emotional entanglement with the two dragons, and is involved in a huge conspiracy. A shocking battle of good and evil that crosses the human and dragon realms quietly