October 4 and 5, 1986. The Ushiromiya family has gathered on the private island of Rokkenjima for their annual family conference. Chief on the agenda concerns the struggle for the inheritance assets of the ailing family head, Kinzo. But as the family is trapped on the island by a typhoon, they receive a letter claiming to be from the rumored witch of the island, Beatrice, and mysterious events begin to occur. And you, you are the exorcist called by them. Entering the mansion, you see a middle aged man, Krauss. Looking around of inside of mansion, you see Krauss's wife, Natsuhi, and the young generation of the family, Battler, Jessica, George, and Maria.

Krauss: "So, uhm, so... khm, sorry, we never called an exorcist before. It's not ordinary for us. So, Mr... ehm..."