Moon’s story revolves around a mysterious organization known as Fargo. The protagonist of the story is a young girl named Ikumi Amasawa who discovers that Fargo was involved with the death of her mother Miyoko Amasawa six years before the story begins. Miyoko, who would often make special cream stew for her daughter, was a member of Fargo. 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.
Ikumi had been one of ten girls her age that gathered at a seminar for people who wanted to join Fargo; she had been ordered to get on a truck which would take the small group to Fargo, and on the ride, Ikumi meets two other girls with similar goals in mind as her. One of the girls is named Haruka Mima who joined Fargo in order to save her older brother. She starts to work with Ikumi for the sake of their mutual goals. The second girl is named Yui Nakura who is searching for her older sister Yuri Nakura who joined Fargo in order to obtain the ‘invisible power’, a kind of extrasensory perception. Yui has an optimistic personality which hides a gloomy past of which she has no memory of. Each of the girls have a strong will to complete their respective purposes, and they help each other along the way.