Savage demons devour unsuspecting humans in Taisho-era Japan. The Demon Slayer Corps wields special swords to end the devastation demons spread. Giyu Tomioka--the sole Water Hashira--and Kyojuro Rengoku--a high-ranking Kinoe--travel on missions to eliminate demons and prove their mettle as two of the fiercest Demon Slayers.

Giyu heads north toward an area where hunters have been killed. He and the Insect Hashira meet Yae, the daughter of a slain hunter. Yae believes a bear killed her father, but the truth is harder to endure... Kyojuro also receives his newest assignment and hopes completing it will prove he's worthy of becoming the Flame Hashira, the title his father abandoned. An explosive battle unfolds as Kyojuro takes on a demon of the Twelve Kizuki with a grudge against Kyojuro's father.