The paid, complete version of Piano at 5 a.m.. It includes additional episodes that depict the characters' pasts and narrated voiceover.
In the early hours of the morning, around 5 a.m., there is sometimes a thick fog. In addition, there is a story about people who went out on a foggy day and never came back. People are not sure if this is true or not. However, most people in this town do not go out on foggy mornings. She, who lives in a log house in the mountains, loved such fog. On foggy mornings, she always goes for a walk. But she doesn't really know why she likes fog. So, although she likes fog, she does not like foggy mornings. She wanders around in the fog as if she is attracted and driven by something she does not understand.