A group of children mysteriously disappeared during a festival on Rogetsu Isle. Although they were found, they had lost their memories. Now they have returned to the island as teenagers. The girls rely on the Camera Obscura, a camera with the power to capture and seal away unthinkable horrors, and the faint beam of their flashlight while exploring various locations and fending off the ghosts that attack them as they attempt to discover the truth of their haunting past.