The mysterious H School located in Zhuangyuan Mountain has just started school. Lin Xiao, Liu Dongxing, Li Yan and Wu Zongliang were assigned to a dormitory. Soon, something strange happened: Liu Dongxing's leg began to rot inexplicably. However, none of them thought that the culprit turned out to be an inconspicuous mosquito. It turns out that the mosquitoes sucked the dead bodies in the cemetery behind the mountain and turned into "ghost mosquitoes".
In order to save Liu Dongxing, the other three people broke into the back mountain at night and almost fell into the trap. They risked their lives to find the body that could be used as a medicine guide. However, Wu Zongliang disappeared unexpectedly. While Lin Xiao and Li Yan were worrying about how to find Wu Zongliang, Liu Dongxing called for help...
All kinds of weirdness and coincidences are not accidental, a huge conspiracy reaches out to four people.
What is the amazing secret of the mysterious Zhuangyuan Mountain? Let's wait and see!