The year is 1982, and the place is Shōnan in Kanagawa Prefecture, Japan. A group of passionate young people operate a beach radio station for the local community.

The supernatural grudge manifests itself by way of a strange cyst growing in the body of a young woman, slowly draining all life from her in revenge for… what?

Murakawa, an aging Tokyo yakuza tiring of gangster life, is sent by his boss to Okinawa along with a few of his henchmen to help end a gang war, supposedly…