In Taisho-era Japan, the kind-hearted Tanjiro Kamado earns a living by selling charcoal. However, his peaceful life is shattered when a demon slaughters his entire family. His younger sister, Nezuko, is the sole survivor—but she has been transformed into a demon herself! Tanjiro embarks on a perilous journey to find a way to restore his sister to her human form and to destroy the demon that ruined his life.
For the first time in over 100 years, the upper ranks of Muzan Kibutsuji’s "Twelve Kizuki" are not fully staffed. Enraged, Muzan dispatches the survivors on a new mission. Elsewhere, Tanjiro travels to a village of swordsmiths, where he must explain to Haganezuka—the craftsman who forged his blade—how his sword came to be so severely damaged. As Tanjiro waits for his sword to be repaired, enemies draw near…