Is there a plugin that can scan my TV shows folder and give me an output of missing episodes?

If not, can someone who knows how to do something like this please do it?

Thank you thank you

There is FindMissing and FindUnmatched https://forums.plex.tv/discussion/200017/support-find-my-plug-in-here-for-support

I believe the plugin trakt.tv will do this for you.

Maybe yo can try SickRage its not a Plex plugin but it will do what you want.

Try Sonarr! This isn’t a plugin, but a standalone program - and it’s amazing. I was originally just looking for the same as you - what episodes am I missing. But now I use it to manage downloads for me - it gets new eps of all the shows I want automatically. But you could certainly just use it for tracking what you need.