After programmer Shen Xinghe died suddenly while working overtime, he was thrown into a terrifying game world full of loopholes. Other players were trembling in front of the ghosts, but he frowned at the code errors on the NPC - "This loop is redundant, the pointer overflowed, this line of syntax doesn't work at all!" While other players relied on props and luck to survive, Shen Xinghe took out the virtual keyboard: Let me see, which bug is causing the ghost?