To reminisce about the old-school life, Ho Tsz Fung (starring Tsao Yu-Ning) and his university classmates go back to his high school together. Over the years, there are a lot of mysterious rumours spreading among the students, due to the occupation by Japanese army as a military laboratory during the World War II.
The college’s principal and in a teacher in training, Mr. Law (starring Yuen Cheung Yan) and Miss Fong (starring Esther Huang), show them around the campus and some specific historical traces. When passing the school museum, they’re extremely excited when checking out the archives of Japanese army. They find a former student’s diary among the archive journals, which recorded lots of supernatural events in the past, even included a mysterious disappearance of a girl. What on earth was hidden behind those cases? Will these 5 visitors have the same experience soon?