The story of a man who gets trapped alone in a mall bathroom over the weekend, as told through voiceovers and security camera footage.  A guy walks into a bathroom to piss, and the janitor, having previously cleared and cleaned the bathroom, locks the door, as that wing of the mall is about to undergo renovations.  The man is trapped, and must undergo the terrible aloneness of his situation, talking to himself, hashing and rehashing his own problems, solving some, failing to solve others, until it is finally revealed all this is taking place on a screen in a psychology lecture, and the voiceover is actually the professor.  We never learn the fate of the man trapped in the bathroom alone.