Kuroshitsuji Movie: Book of the Atlantic

Ciel Phantomhive and his faithful demon butler, Sebastian Michaelis, embark on a chilling voyage aboard the luxurious Campania to investigate the Aurora Society, an organization rumored to be resurrecting the dead. As they mingle incognito with the elite, they encounter not only a miraculous resurrection but also the nightmarish reality of the undead walking among them. The situation escalates when they are attacked by these reanimated corpses, plunging the ship into a deadly crisis.

Amidst the chaos, the flamboyant reaper Grell and his partner Ronald Knox appear, adding another layer of complexity to the investigation. As Ciel and Sebastian dig deeper, they uncover a sinister plot tied to the society's mysterious phoenix symbol. With time running out and the ship teetering on the brink of disaster, they must navigate through dangers both supernatural and physical to unravel the secrets of the undead and ensure their own survival.