Natsume is implored to help spirits who are currently being exorcised. He finds a kindred spirit in Tanuma, a boy who also senses spirits although not as powerful as Natsume.

Natsume comes across an old ticket in Reiko's belongings and decides to go to the abandoned train station to see why she kept it. There, he meets a slow witted spirit named Santo, who was waiting for Reiko the entire time to go Kiriganuma, to see and make up with his friend, Mikuri, but the trip isn't as easy as it first seems...

Natsume meets a popular actor named Natori Shuuichi who can also see spirits, and has a side job as an exorcist.

Natsume is possessed by a sick koto player, whose friend wants her to be able to play one last time.

When Natsume finally has enough of Nyanko's behavior, Nyanko leaves, wandering about by himself and causing trouble.

Tanuma finds out that Nyanko-Sensei is a spirit. Tanuma and Natsume enjoy the autumn festival and previous acquaintances are seen again.