While under the care of the Demon Slayer Corps, Hashira, Shinobu, Tanjiro, Zenitsu, Inosuke and Nezuko have recovered. They have even learned a new and powerful technique—Total Concentration! They’ll need this new power and all their skill on their next demon-hunting mission aboard the mysterious Infinity Train as it takes them into the dreams of demons!

In Taisho-era Japan, kindhearted Tanjiro Kamado makes a living selling charcoal. But his peaceful life is shattered when a demon slaughters his entire family. His little sister Nezuko is the only survivor, but she has been transformed into a demon herself! Tanjiro sets out on a dangerous journey to find a way to return his sister to normal and destroy the demon who ruined his life.