After a dimension jump to a nuclear wasteland, the hotel is between dimensions. Outside the doors of the hotel is nothing but a dark, thick fog. Walking into the fog is possible, but if you walk far enough, you will end up right back where you started in the lobby of the Kairos.
The Kairos is slowly starting to fill up again. After the numbers within the hotel dwindled down to only two, it seems that new guests are arriving one by one. Sometimes even a few at a time. With little to go on but the knowledge of the only two who've been in the hotel for a while, the guests must settle in and hope that they get some answers.