This story is a sequel to The Apple Falls Far from the Tree
Apple Bloom thought her Everglow days were behind her. Sure, she got a lot out of it, mostly cool stuff, including tales to share, but she was back on safe Equestria. Nothing that strange happens that the adults don't take care of, but there it is.
Reading the prequels is not required, but would explain why Apple Bloom knows what she does. You will be able to enjoy the story outside that if you can just enjoy an alchemically competent filly!