“The Golden Key”
A boy is sent out in the winter to fetch some wood. Once he gathers some, he wants to start a fire to warm himself. He clears away some snow and finds a golden key. He figures the lock must be nearby, so he clears away more snow and finds an iron chest. He figures if the key fits, it must open the chest full of wonders. He puts the key in the lock and then “… he turned it once round, and now we must wait until he has quite unlocked it and opened the lid, and then we shall learn what wonderful things were lying in that box.”
That’s the gist of the one paragraph “story” and that was the last line. I guess it’s a story a parent could tell their kids, and then the kids could argue for an hour over what was “really” inside the box while the parents slipped out for a flagon of ale, or something.