The idol Saya Hikita has been able to see spirits from a young age. Even though she could sense the messages that the spirits were trying to send, she could never fully communicate with them. To try to understand the spiritual world, she is joined by the Medium Kansho Aizawa to visit Dojo Seki: a mysterious stone that is said to contain the spirit of a young girl who died in a flood many years ago. After Aizawa communicates with the girl to learn more about the flood that destroyed her community, she and Hikita venture to the community to see the truth of what ...