Tong Xiao's life was originally going smoothly, but everything took a turn for the worse after he was transferred to N City. One night, while driving the night bus, he met Hazaki, who was also alone... After experiencing a series of strange things, Tong Xiao took Hazaki back to his home. Unexpectedly, when he opened the door, he saw the scene of the tragic death of the young girl Rina... How many unsolved mysteries are there in Tong Xiao waiting to be revealed, and whether Tong Xiao can escape from this series of mysteries...