Set after the fight with Upper Moon 6.
Tanjirou has recovered from the battle and is soon sent back out into the battle field for a mission along side Kanao where the two encounter a nightmarish opponent.
Eventually the two demon slayer's goals shift from killing to surviving.
All the while, Shinobu and Giyuu struggle to find their students and bring them home safely.
Before Hikaru, Tanjiro, Nezuko, Zenitsu and Inosuke leave the wisteria house to Mt Natagumo they are brought to a field and told they are going to react to there past and future. They aren't the only ones there either and everyone wants to know, who is the person that brought them here and who is it that they dearly wish to save? Join the Hasira, demon slayers and demons as they see their future, uncover secrets and plan so that they can hopefully stop the death and destruction that is going to happen.