The setting is summer 1995.
The Tokyo subway sarin gas attack that winter brought an end to a rash of new religious cults.
A Western-style mansion in a small coastal village in the Tokai region is home to psychic Hisui Abe.
One day, novelist Minori Yomoda suddenly begins to see her dead friend Yuya. In order to find out the true nature of her psychic abilities, she goes to the house of Abe together with an ethnographer acquaintance Benio Ebikusa, and his assistant Aki Ikaruga.
However, Minori’s search for answers comes at a time when the village is very busy preparing for a once-a-year secret festival, Owatari.