Kidnapped as a newborn baby, Alois Trancy only recently returned to his family’s manor alongside his mysterious butler, Claude. Having inherited the estate after the sudden death of his father, the selfish and sadistic Alois torments his staff and wishes for the world to be engulfed in darkness. Meanwhile, Sebastian and his master have returned, and despite Ciel having no recollection of recent events, they continue to investigate mysterious incidents throughout the country. However, they are not alone, as the head of the Phantomhive household has caught the eye of Alois, who desires the young noble for his own reasons. Just what does Trancy want with Ciel, and will Sebastian be able to protect his master until the very end?