It never ends

You sit up an nearly hit your head on the ceiling. You're in the top bunk, The bunks across you are empty, and a quick peek over the edge of your bed shows that the one below you is empty too. You seem to have thrown off your blanket in the night, as it is currently crumpled in a heap on the floor. Not that you'd need it anyway. It's sweltering in here. You climb down from your bunk to open the window, and breathe in the cool night air that rushes in.

Ah, much better.

Now that you're not in immediate danger of getting heatstroke, you get a closer look at your surroundings. There's not much to see, just simple steel bed frames and plain white bed sheets. A storage box is to the side of each bed. There isn't much of a view outside the window either. The landscape is rushing by too fast to get a good look, but it's probably just a barren desert out there.

You're not sure how you got here.

It's a bit lonely in here all by yourself, though. Maybe you'll take a look around.