In the secluded English countryside stands the eerie Phantomhive manor, home to the enigmatic Phantomhive family known for their dual roles as the 'Queen's Watchdog' and London's underworld masterminds. When tragedy strikes, leaving the Earl and his wife deceased, their young son Ciel steps up as the new Earl, surrounded by a peculiar staff. As whispers spread about the child Earl, it becomes clear that crossing paths with Ciel and his demon butler Sebastian is a perilous choice. Set in the late 19th century, Kuroshitsuji chronicles their journey through a labyrinth of enigmas and perils that grip England, all while unraveling the dark secrets shrouding Ciel's parents' fate.