Unlock by liking the Facebook PAGE, not by liking my WP page!

I'm looking at both the Pay with a Like and Social Marketing plugin, which seem to do the same sort of thing; in either case, not what I want. Believe it or not, I don't have any use for the individual page on my site being promoted. What I want is to build the Facebook page. In other words, I want them to have to like a particular FB page before the content is unlocked. Is this here somewhere and I just don't see it?