The sensational movie, Whispering Corridor: Memento Mori from the summer of 1998 had been entitled, An Acacia during filming to reflect a story about pure love and friendship between girls. However, there was no need to change anything in the sequel, because both of the success of the first and plot itself - much like an acacia. In fact, when two young directors, Kim Tae-Yong and Min Gyu-Dong, were chosen to make the movie, they were given no guidelines at all for the second story. They willingly accepted the conditions to come up with whatever story matched the title, so they filmed it with added inspiration.

They had already dealt with the emotions of high school girls in their short film, The Seventeen, which focuses more on high school girls than on horror - exploring the roots of the restlessness and angst of adolescent girls. The "Exchanging Diary" among the students take a particularly important role in the main motive. One girl had committed suicide and the aftermath permeates the school. This death reminds us of the anxiety which will never be dealt with after adolescence. Consequently, love is the main theme in the sequel. The ghost's presence in the school resonates disappointment in love, yet is as pure and fragrant as an acacia.

    
    

Chapter 1. Death - Death of a student wakes up the girls' high school that has slept for long time in daily routine. The school is animated in a sense. As death floats over heads of students, it creates terrible imaginations in them. Mid summer comes. Its burning sun begins to shine in the dark side of school. Distorted features reveal little by little.

Chapter 2. Pastime - Ghosts remained yet in this school begins to play games. The game is step by step led by a girl who picks up a violet diary the ghost cast. Other girls also begin to participate in this game one by one. The game is like this. All day long they track all the move of the student to be dead in the next day according to instruction on the diary.

Chapter 3. Terror - The mood of death quickly spreads over the students. Fears in their mind make ghosts appear here and there. Teachers seek for the cause of death and students way out from fears. The whole school loses their direction.... What is the end of long day like?