Towa Higurashi learns about an incident that took place decades ago involving a half demon named Inuyasha and a priestess named Kagome.

Half-demon twins Towa and Setsuna are separated from each other when Towa is hurled into the future, where she is found and raised by Sota Higurashi.

A demon emerges in the present day with Setsuna and the bounty hunter Moroha in tow. Seeing Setsuna in trouble awakens Towa’s latent demon powers.

Towa decides to help Setsuna regain her memories. The trio enter the corridor leading to the feudal era, but within it awaits a certain spirit.

Towa and Setsuna take on a request to slay Jakotsumaru, a boy who has been extracting bones from humans and beasts in order to revive his father.

Towa, Setsuna, and Moroha head to the northern mountains to find some missing travelers, but instead they find a village overrun by ghost cats!