Plex has completely jumbled my shows

How can i force a rescan of everything. My direcotires in plex don’t even remotely resemble the directories on my drives. I click play on eps 1 of 3 different shows, and an eps of an entirely different show. it’s a mess, and i haven’t been able to figure out how to clean it up.

How are your folders and files named?
Tv shows in Plex require a great amount of discipline with naming.
https://support.plex.tv/hc/en-us/articles/200220687-Naming-Series-Season-Based-TV-Shows

  1. Look up your show on TheTVDB
  2. Take the title as it is used on TheTVDB. If there is something in parentheses, take that too. If the title contains invalid characters (depends on your file system), like § : % *, simply leave them out.
  3. Check the naming and the folder structure of your show. Name the top folder of the show exactly after the title on TheTVDB. No abbreviations. No additional subfolders. No aliases.
  4. Name the episode files according to the above linked naming guide. Use the same title as for the top folder. Show's Title - s01e01 - additional info.ext (’- additional info’ can be left out)
  5. After you corrected the naming and folder structure, perform the Plex Dance with all files for this show.

Names are quickly adapted for a whole tv show when using software like Filebot