To the Sky Kingdom book cover

Cover via Open Library

Movie · 2017

Is Once Upon a Time based on a book?

Quick answer

Yes. Once Upon a Time is based on the book To the Sky Kingdom by Tang Qi.

The movie was released in 2017.

The book behind Once Upon a Time

To the Sky Kingdom cover

To the Sky Kingdom

by Tang Qi

Novel by Tang Qi.

Other adaptations of To the Sky Kingdom

Common questions

Is Once Upon a Time based on a book?

Yes. Once Upon a Time is based on the book To the Sky Kingdom by Tang Qi.

Who wrote the book Once Upon a Time is based on?

To the Sky Kingdom was written by Tang Qi.

Should I read the book before watching?

If you like knowing the full story and characters first, read To the Sky Kingdom before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.

Facts from Wikidata (CC0). See also Wikipedia.