Once again, young Earl Ciel Phantomhive, who serves as the Queen's Guard Dog, is ordered to investigate paranormal happenings in Victorian London. This time around, rumors of miraculous resurrections have raised apprehensions, prompting Ciel and his demon butler, Sebastian Michaelis, to embark on the lavish cruise ship, Campania. The objective of their mission is to reveal the Aurora Society, an alleged medical organization that experiments on the deceased. However, their inquiry takes a sinister turn with the appearance of grim reapers aboard the vessel. The undead pose a threat to the world and the duo must discover the hidden secrets behind the Aurora Society's phoenix emblem. They receive help from some familiar faces as they must either find a way to put the undead back in their resting places or risk sinking to a watery grave.