Old student Ho Tsz-fung (Cho Yuen-ning) brings four college classmates to their alma mater, Tak-wang College, which is about to be massacred, to reminisce. The college was once occupied by the Japanese army as a military laboratory, and many terrifying supernatural events have been circulated over the years. Principal Law (Yuen Cheung-yan) and Teacher Fang (Xuan) took them to visit various places in the school and explained the history. Everyone came to the school museum and was extremely excited when they saw the wartime Japanese military materials. They also found an old-timer's diary in the old publications, which recorded various supernatural events that old students had encountered in the past, and even mentioned a mysterious student disappearance. What secrets are hidden in it? Will they encounter the same supernatural event?