To reminisce about the old-school life, Ho Tsz Fung (starring Tsao Yu-Ning) and old friends revisit their school before it shut. 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.<br><br>The college’s principal and a tutor, Mr. Law (starring Yuen Cheung Yan) and Miss Fong (starring Esther Huang), show them around especially 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.