Black Butler Season 3 OVA is also translated as "The Ghost City Murder Case", adapted from the comic "Black Butler" created by cartoonist Shu Liang. The background of the full set of Black Butler Season 3 OVA is the late 19th century in Britain during the reign of Queen Victoria. The specific time starts from 1888. In the 19th century, a young master of a noble family, who was known as an evil noble and the queen's watchdog, made a contract with the devil in order to fulfill his wish. There must be a butler close to him. Sebastian Michaelis is a butler, a perfect and almighty butler who combines knowledge, education, taste, cooking, martial arts and other skills. Because the young master suffered the resentment of many nobles due to many coercions in the business world, the butler not only took care of the young master's daily life, but also served as the young master's bodyguard, offering the best hospitality commensurate with the nobles. Today's butler is also dressed in a black tuxedo to perform his gorgeous butler duties. Responsible for taking care of the 12-year-old British nobleman Count Charles Phantomhive. Butler Sebastian Michaelis is a demon who made a contract with Ciel Phantomhive, the price of which is the soul of the contractee.