Hidden in the English countryside stands the foreboding manor of the Phantomhive family, who have positioned themselves as the cold and merciless "Queen's Watchdog" and the leader of London's criminal underworld. Following a tragedy that kills the Earl and his wife, many are stunned when their son, a young boy named Ciel, assumes his role as the new Earl of the Phantomhive house. Initially, many view him merely as a child attended by a few eccentric servants. However, they quickly come to understand that interfering with Ciel and his demonic butler Sebastian is a foolish mistake. Set at the end of the 19th century, Kuroshitsuji tracks these two as they confront numerous mysteries and dangers afflicting England and endangering the Queen, while simultaneously uncovering the truth regarding the fate of Ciel's parents.