Set in the year 2020, Shiori Genbo runs the large corporation Funtom. Shiori is also a descendant of prestigious noble family Phantomhive of England. As a descendant of the noble family Phantomhive, Shiori solves difficult cases which are ordered by the queen. In order to take revenge, Shiori makes a deal with Butler Sebastian. Their deal involves Butler Sebastian protecting Shiori until her revenge is fulfilled and then Sebastian will consume her spirit.