the only thing that Plex can read currently from an NFO file is the IMDB ID tt1234567
There is a third party agent that can be used to load NFO files in to Plex.
for movies XBMCnfoMoviesImporter
for shows XBMCnfoTVImporter
the NFO file must be in the format that XMBC could load…
search Plex forums on where to get them…
I use them myself…
Easiest way to load the correct information into Plex
You can get them to load collection names with the movies but not anything else.
that I am aware of…