Civilization Integration Plan

An unexplained lethargy is spreading around the world. There were no lesions, no wounds, or even any obvious abnormalities, yet some people slept for several days and never woke up. The Bureau of Anomalies is investigating this unprecedented disaster. They originally thought that this was just a new abnormal event. Until someone is sleeping and goes to a place that does not belong to this world. And at the end of that strange world, someone seemed to be waiting for them.