Chen Zhihua, Li Chao, Yang Pingwei, and their friends go on a picnic. After Chen Zhihua plays a prank on Li Chao, he goes to relieve himself in a graveyard and finds a gravestone with a QR code carved into it. When he scans it, the screen displays: "Grave of Chen Zhihua." After that, he's plagued by nightmares, the words "Grave of Chen Zhihua" gradually appear on his body, and he keeps passing sand and mud. It seems he's been afflicted by the "Human Gravestone Curse." As it turns out, Yang Pingwei and Xu Lin set Chen Zhihua up to take the curse so Yang could rid himself of it. Li Chao is also caught up in the curse, and, desperate to save himself, he kills Yang Pingwei before jumping off a building. The ending reveals that Chen Zhihua is the source of the curse. He and Xu Lin conspired to use Yang and Li to prolong their lives, and they're still searching for a way to break the curse for good.
