Lu Mingyuan, a junior student in the Department of Botany at Nanshan University, went to Qingshan Village for an inspection to complete an academic mission. While picking a rare rock fern, he accidentally fell into a dry well covered by vines behind the village. A coquettish blood-like flower bud at the bottom of the well bloomed with blood on his forehead, and the powder entered his body, causing him to fall into a coma.
After waking up, Lu Mingyuan suffered from a high fever and blue-black lines appeared under his skin. The villagers regarded him as an evil spirit and tied him to an old locust tree to be burned. At a critical moment, the one-eyed old man Chen Xiazi stepped forward and revealed that he had been infected by the "heart-eating poison" - the demon flower from the bottom of the well had entered his body, and he would lose his mind and become a murderous walking corpse within three months.
Blind Chen used special grass roots to temporarily suppress the poison, guiding him to leave Qingshan Village before dawn and go to the county town to find Su Qingqiu from Qingjiang Bookstore and Yu Yiping from the auto repair shop. Only two people could help him go to the "Great Market in the Mountains", the only place where the poison could be cured.
Lu Mingyuan arrived at the county seat on foot to find Su Qingqiu. Just as he was telling his story and asking for the truth about Daxu, there were arrogant beatings and yelling outside the door. The pursuit was coming. Poison, Daxu, and unknown enemies and friends formed a huge web, dragging him into a life-or-death disaster.
