Background Info That Won't be repeated during the next chapters

The gladers, scorchers, the residents of Beacon Hills, Irene Kennedy and Stan Hurley, all disappear and the same time and reappear in what looks like a movie theater. They all look to he side of the room where they see a man on a bed, passed out. But wait, he seems familiar. Just as everybody gets closer, there are gasp all over the room.
"Stiles?" "Thomas?" "Mitch?"

Or where every body is in for one hell of ride while watching their friends' messed up life.