As a train faces a series of enigmatic vanishes, the Demon Slayer Corps' endeavors to solve the mystery hit dead ends. Stepping up to avert further tragedies, the Flame Pillar, Kyoujurou Rengoku, takes charge of eradicating this menace. Alongside him are the Corps' promising talents: Tanjirou Kamado, Zenitsu Agatsuma, and Inosuke Hashibira, eager to witness the prowess of this exemplary demon slayer. Little do they know, the malevolent forces behind the disappearances are already executing their dark scheme. Confronted by this sinister presence, the group must summon all their courage and unsheathe their blades to rescue the two hundred souls on board. As chaos ensues, Tanjirou's dedication and sense of duty face a severe trial.