In Victorian-era London lives a thirteen-year-old earl named Ciel Phantomhive, who acquired this position after the events of December 14th, 1885 (Ciel's birthday), when the Phantomhive manor was attacked by unidentified perpetrators and was set ablaze. Ciel, amidst of the chaos, discovers his parents, Vincent and Rachel Phantomhive, to be dead along with the family dog, Sebastian. The same night he is kidnapped by the attackers and then sold into slavery, where he ends up in the hands of a sadistic, demon-worshipping cult. Ciel then endures endless physical, mental and sexual abuse at the hands of his captors. Ciel was also heat branded with a mark referred to as the "mark of the beast". One night, during a sacrificial ceremony to summon a demon, instead of forming a contract with the cult members, the demon states that he was summoned by Ciel, therefore he only agrees to form a contract with him, killing all the cultist members in the process. To show a contract was formed, the demon places a contract symbol referred to as the Faustian contract symbol on Ciel's right eye, giving it a purple hue, and his iris and pupil now showcase the symbol of the convent. After the formation of the contract, the demon reveals he will consume Ciel's soul as payment for helping him achieve his goal; revenge on those who brought down the House of Phantomhive. Afterwards Ciel names the demon Sebastian Michaelis, after his deceased pet. The duo then return to society as Ciel takes over his now late father's previous position as the queen's watchdog, a very high-profile individual who is tasked with investigating cases that Queen Victoria herself deems especially important or threatening to England and the crown.