What is an example of The Lost Message being used as source material?

It seems you're asking for an example of a piece of media that takes inspiration from a concept called "The Lost Message". However, there isn't a widely recognized concept or narrative trope with that name.

It's possible you're thinking of a specific piece of media or a narrative idea you've encountered, but it's missing some context.

To help you find what you're looking for, could you please provide more information? For example:

* What is the context of "The Lost Message"? Where did you hear this term? Was it in a book, movie, or game?

* What is the general idea behind "The Lost Message"? What is the message, and what makes it lost?

* What kind of source material are you looking for? Are you interested in a book, movie, TV show, song, or something else entirely?

With more information, I can help you find the relevant examples of this concept being used as source material.