"Stupid - broke - door -" says a small winged person repeatedly slamming and reopening the door and scowling at the empty unremarkable room beyond.

Terence is walking briskly toward the source of the commotion. Repeated thumping sounds are rarely a good sign.

He comes around the corner and pauses. He cleans his glasses and looks again. Yep, wings.

"Excuse me."

She looks at him, pausing short of slamming the door again.

"Door break," she explains.

"Yes, it might if you keep doing that. Why are you-" not quite human, "-upset at a storage room?"

"Is not supposed being storage room. And is not me trying break it, already break!"

He walks closer, near-shouting down the hall is mildly annoying. "Well, what's it supposed to be doing?"

"Was supposed going home but go here instead."

"This door, was supposed to go home? It's a dead end. Does it look like your house's door?"

"No, no, is, went from home to nice bar, then, door out supposed putting me right back where came from, but, instead put me here."

Uh oh. "The nice bar's door goes to more than one place? Oh dear. This sounds like lost technology."

"No is magic."

"...As someone whose name is lost to time once said, 'sufficiently advanced technology looks identical to magic'. Lost technology does all sorts of unfathomable things."

"...okay, but, Milliways actually magic."

Okay, fine, go along with the little kid about the magic. "If I knew things about Milliways other than its name and that it has multiple-destination doors I might be able to help you better."

"Think maybe a person not close door all the way, can finding who come out this door before me?"

"I can try, but there are hundreds of people who work here..." And someone using a secret teleportation device for unknown ends sounds like a political problem. Not the sort he's best at.

"Right, before I go looking, you have wings, how bad is it if people get very excited over that fact?"

"Don't petting me."

"Well people will think anyone can get wings and some of them will probably ask me how to get their own. I'll say it's impossible and not explain, that's probably simplest. How do you have wings, precisely?"

"Am angel, like Mommy."

"Hereditary. Designed?"

"Genetically engineered."

"Someone genetically engineered from offworld. I want to talk about that but let's go look for your door's previous user before they have more time to get further away. Your parents aren't here and likely no other family or friends, correct? Could be tricky, that."

"Yeah, did check for ones of parents, sisters, Jane, everybody."

He walks off. "Ones of? Nevermind, explains will wait, what did Mr. Door-Breaker look like?"

"He a human, wearing blue, did not see face very much."