A mysterious little village, young Bu Li, two years.
After he returned, deaths occurred one after another.
Decades later, villagers in the mysterious village suffered from an incurable disease.
The Tiger Squad went to the village to investigate and found that the pathogen was actually in the forest...
What's the secret here?
In the terrible mountains...
There was a melodious sound of the piano, which was the music of death.
There was a strange figure in the river next to the camp.
Mysterious smile, blood...
All team members mysteriously disappeared.
What's the reason for this?
Behind the mysterious knot is a desolation...