"Moon" story revolves around a mysterious organization known as Fargo. The protagonist of the story is a young high school girl named who discovers that Fargo was involved with the death of her mother six years before the story begins. Miyoko, who was a former member of Fargo, would often make special cream stew for her daughter. Following this revelation, Ikumi joins Fargo to discover how and why her mother died while also slowly uncovering the group's disturbing nature of harnessing psychic abilities through torture. Ikumi ultimately wants to take out her revenge against Fargo for killing her mother.