How is “not only” used?

In Summer of Soul (2021), one line is: “And not only that...”

Which movie is “not only” from?

The clip at the top of this page is from Summer of Soul (2021).

Idiom

used to emphasize that sth else is also true

Heard in 1,097 movies

not only… (but) (also)…
used to emphasize that sth else is also true
She not only wrote the text but also selected the illustrations.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

And not only that...

Said in 8 films · #1