This idiom or expression means:

The whole thing.
All of something.

Our vendor got us a box suite at the baseball game! It didn't just give us the best seats in the stadium. It also included free parking; a private living room, kitchen, bathroom, and food; the whole nine yards!

Also:
The whole shebang.
The whole enchilada.

This idiom or expression means:

Completely.
The whole thing.

When someone says “We bought it hook, line, and sinker,” they mean something like “We believed the whole (false) story.”

This expression is used with verbs like buy, accept, fall for, etc., and has to do with being deceived.