Based on a novel by Nagae Toshikazu. "You'll be meeting your friend soon." 'Ghost System' opens with Misaki entertaining the audience with her thoughts on life, death, science, and the mysteries of the afterlife. Misaki then remembers the hours leading up to her current predicament -- cowering inside the aforementioned dilapidated building in a forest. Lovely. It all started with the disappearance of Misaki's best friend Mai. One day both Misaki and Mai's boyfriend Wataru receive emails on their cell phones supposedly from Mai. But there are no messages, only a picture of some trees in the aforementioned forest. The two are determined to find her, even though looking for some generic trees in a large wooded area is not, as you might imagine, be that easy.