There's a grove of poplar trees at the high school, once a mass grave in the old days. A Taoist priest used his own body to suppress the evil, planting ninety-nine poplar trees, yet still failed to seal away the resentment beneath the ground.
After ordinary teenager Qin Sheng accidentally approaches the ancient tree at the heart of the formation, he becomes haunted by evil forces. With no one believing him and nowhere to run, he can only write his final testament and uncover the eerie secrets that have been buried at the school for years.
