How is “all in one” used?

In Alita: Battle Angel (2019), one line is: “All we know is the sky cities fell all in one night...”

Which movie is “all in one” from?

The clip at the top of this page is from Alita: Battle Angel (2019).

All we know is the sky cities fell all in one night...

8 作品で登場 · 1 本目

altogether within a single time, occasion, or container; having two or more uses, functions, etc.; unhurt and whole, with nothing missing or broken

24 本の映画に登場

編集映画の 70%
altogether within a single time, occasion, or container
All we know is the sky cities fell all in one night...
オックスフォード映画の 20%
having two or more uses, functions, etc.
and a father confessor, all in one.
編集映画の 10%
unhurt and whole, with nothing missing or broken

定義：Oxford Advanced Learner's Dictionary 第 9 版