After ridding of Angela/Ashe, the Angel of Massacre, London starts with a new beginning.
Ciel returns and seems to have lost a bit of his memories. A new butler, named Claude, and a new master, Alois, are introduced. Are they enemies of Ciel and Sebastian?
Ciel's sister has now gained all of her memories, but for some reason she's still being called Mystery and not Anastasia. Mystery has also somehow changed, but also remains the same. Sebastian is more protective and loving around her and Mystery is protective of Ciel.
More of Mystery's past will be revealed. Will she have a connection to Alois? Is she involved with his past?
Claude is after Ciel's soul and Sebastian and Mystery are against it. Demons fight over one soul- two for themselves and another to protect....
* Won 2nd Place in AnimeWattyAwards contest in 2014/15 in the Black Butler/Kuroshitsuji category.