It's a really big book series that focuses on all these different breeds of dragon and some prophecies. It's honestly a pretty good/interesting series that I recommend checking out, though
I forgot a majority of the plot/characters/etc. due to how long it's been since I read any of the books. Also, if reading isn't really your thing, there's some visual novels of the books as well (I don't think they made visual novels to *all* of the books, so if you don't like reading, well... there are *many* books, all of which are fairly long, especially Darkstalker ( https://kids.scholastic.com/kids/book/darkstalker-by-tui-t-sutherland/ ), one of the Legends books (Google says that there are, specifically, seventeen in total, though that might be wrong since there's the main series, the Legends books, and, as I said before, the visual novels - some of which may not have been counted for when they were added up, though I'm not certain). Anyways, I'm not the best/most reliable source for learning about the series due to me having forgotten a majority of it, so I suggest checking out Wings of Fire via Wikipedia and other sources (some of which are listed below):
https://en.wikipedia.org/wiki/Wings_of_Fire_(novel_series)
https://kids.scholastic.com/kid/books/wings-of-fire/
https://www.scholastic.com/parents/books-and-reading/book-lists-and-recommendations/adventure-fantasy/books-in-the-wings-of-fire-series.html
https://wingsoffire.fandom.com/wiki/Wings_of_Fire_Wiki
https://tuibooks.com/