On the secluded island of Rokkenjima, Battler Ushiromiya and his family were trapped and murdered under unusual circumstances attributed to Beatrice, the Golden Witch.
After continually challenging the existence of magic and powerful witches, Battler has become the Game Master of the board involving the mysterious events that occured. To prove his understanding of the mystery, he must defeat Erika Furudo, the detective and piece for the witch Bernkastel. Meanwhile, a childlike Beatrice, reborn through Battler’s efforts, struggles to regain her former personality for Battler’s sake.
As the new game begins, the unfolding events are brought into existence by two objective observers: the Witch of the Theatre, Featherine Augustus Aurora, and her chosen reader, Ange Ushiromiya, Battler’s sister as she is in 1998.
On Rokkenjima in 1986, love becomes important to understanding the truth behind the events, particularly as it pertains to George and Jessica Ushiromiya, and the servants Shannon and Kanon.