In Europe's Victorian era, a male child is robbed of everything he holds dear by a sinister conspiracy. In his dying moments, he strikes a deal with a demonic force, giving up his soul in exchange for revenge. Ciel Phantomhive is now at the helm of the Phantomhive corporation, supervising all operations and secret assignments for England's Queen. Assisting him is his otherworldly servant, Sebastian Michaelis, whose skills as a butler are matched only by his strength as a demon. Together, they and their household staff work to unravel the secrets surrounding the murders of Ciel's parents and the terrifying occurrences that ensued the next month.