The cinematic experience opens by thrusting viewers directly into the intense climax of the Entertainment District Arc. Tanjiro Kamado, his sister Nezuko, Zenitsu Agatsuma, and Inosuke Hashibira find themselves locked in a desperate, high-stakes battle against Upper Rank Six demons, Daki and Gyutaro. The conflict pushes the young Demon Slayers to their absolute physical and emotional limits. Through sheer resilience, synchronized teamwork, and the unexpected awakening of Nezuko’s powerful blood demon art, the siblings manage to overcome the relentless siblings. Gyutaro’s venomous strikes nearly claim their lives, but relentless
determination prevails, resulting in the long-awaited defeat of an Upper Rank demon—a monumental feat not achieved in over a century.Following this harrowing victory, the narrative transitions to the eerie, shifting dimensions of the Infinite Castle. The defeat of Upper Rank Six sends shockwaves through the upper echelons of the demonic hierarchy. Muzan Kibutsuji summons the remaining Upper Rank demons, expressing cold fury over their centuries of stagnation and demanding redoubled efforts to eradicate the Demon Slayer Corps and locate the elusive Blue Spider Lily. This atmospheric sequence builds palpable tension, establishing the terrifying threat level of the surviving antagonists, particularly the formidable Upper Rank One, Kokushibo, and the cunning Upper Rank Four, Hantengu.As the dust settles, Tanjiro recovers from his near-fatal injuries at the Butterfly Mansion, mourning the toll the battle took on his friends and his shattered Nichirin sword. Seeking a replacement, Tanjiro embarks on a clandestine journey to the hidden Swordsmith Village, a sanctuary populated by eccentric and dedicated artisans who forge the blades for the Corps. Here, he reunites with fellow slayer Genya Shinazugawa and the stoic Mist Hashira, Muichiro Tokito. Tanjiro also encounters the
village chief and discovers a mysterious, ancient battle doll named Yoriichi Type Zero, modeled after a legendary swordsman. By training relentlessly against this mechanical marvel, Tanjiro inadvertently shatters it, unearthing a priceless, centuries-old antique sword hidden within its core.Before the origins of the ancient blade can be fully unraveled, peace is abruptly shattered. The stealthy Upper Rank demons, Hantengu and Gyokko, infiltrate the heavily guarded village under the cover of night. Driven by Muzan's ruthless orders, they launch a devastating, multifaceted assault on the settlement. Muichiro is cast into a distant river, leaving the vulnerable villagers and Tanjiro to face the nightmarish splitting manifestations of Hantengu. As the village bursts into flames and the frantic battle for survival begins, Tanjiro, Nezuko, and Genya must combine their evolving skills to protect the artisans and stave off annihilation, setting the stage for the perilous trials awaiting them in the Swordsmith Village.