Okay, kiddo, do you know what a story is? It's when someone tells you about something that happened, like a fairy tale or a book. A short story is just a little version of that.
NBC is a big company that makes TV shows and movies, and they created a show called "NBC Presents: Short Story." This show is all about telling short stories on TV instead of in a book.
Now, sometimes these stories are funny, sometimes they are scary, sometimes they are sad, but they are all short and easy to watch. You can see them on your TV or computer screen.
So, basically, "NBC Presents: Short Story" is a show that tells little stories on TV. Pretty cool, right?