Ciel and Sebastian begin the episode in a train station as Finny, Bard, and Mey-Rin send them off. Finny becomes so excited, he bumps into a luggage carrier heaving a large crate onto the train, causing the man to drop the box onto his hand. Ciel briefly observes the scratches on the man's hand as the three servants apologize profusely. The owner of the crate then explains its contents, a mummy in a sarcophagus, are extremely valuable. On the train, it is revealed Ciel was sent by the queen to settle a kidnapping case, and during their investigation, they meet a number of suspicious people, ranging from a tattooed priest to a hot-headed Japanese man. The policeman resembling Abberline arrives on the scene, but causes mass hysteria when he reveals there is a murderer held by police on the train. In the dining car, the policeman reveals himself to be Abberline's twin brother, though Ciel has no recollection of the Abberline he once knew. Afterword, Ciel encounters the luggage carrier from the station, recognizing him by the scratches on his hand, and concludes he's the kidnapper. The man flees to the last car while Ciel and Sebastian give chase, but the kidnapper disconnects the car to escape. Inside the isolated car, the kidnapper demands the ransom from the noble whose son is held hostage, but Sebastian stops him. After the kidnapper explains he put a bomb on the train that will detonate once the train stops, Sebastian kicks him out of the car and pursues the rest of the train. Meanwhile, Abberline begins to suffer from a terrible stomach ache that is assumed to be cholera, and Ciel finds the kidnapped boy in the luggage car where the mummy should be. Before the boy can be released, Ciel is taken hostage by the aforementioned murderer, Jack-Knife Hayward, who demands the train be stopped. However, not only is it revealed to all that the train cannot be stopped due to the bomb, but the train is headed for a broken bridge, and there may be an outbreak of cholera. Many of the passengers rise to aid the situation, including the ex-killer of a priest, and the bomb-savvy archeologist. But even after this grand unity of the passengers, Sebastian insists on taking care of everything himself. He amends the crisis by getting rid of Hayward, tearing off the dining car roof containing the explosives, and halting the train just before it reaches the broken bridge. It also turns out Abberline had not contracted cholera, but abdominal pain caused by a mixture of eel and plums, which is "cured" by a simple gastrointestinal medicine. After all problems have been solved, Claude, who had been in the dining car this entire time, confronts Sebastian. With Ciel out of hearing range, he presents Sebastian with an invitation to the Trancy estate, claiming it would resolve Ciel's revenge.
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