Disaster has struck the world unexpectedly. An unusual phenomenon causes people to panic and fear through an effect on the mind with low-frequency waves—almost guaranteed to lead to disappearance. In the span of a few days, the planet lost most of its population. Where do people go? Do they die or get moved somewhere else? No one knows. There hasn’t been a single witness who returned from “there.” The survivors called the cause of the apocalypse the “Black Spectrum.”