Plex only sees episode 1 of ripped DVD

General Discussions
2

Plex Documentation → Your Media
→ Naming & Organizing Your TV Show Files
→ Naming & Organizing Your Movie Files

You need to follow Plex naming and organization requirements.

Rename / reorganize the files, then Plex Dance the entire show.

Example (from the docs linked above):

/TV Shows
   /Doctor Who (1963) {tvdb-76107}
      /Season 01
         S01e01 - An Unearthly Child (1).mp4
         S01e02 - The Cave of Skulls (2).mp4
   /From the Earth to the Moon (1998)
      /Season 01
         From the Earth to the Moon (1998) - s01e01.mp4
         From the Earth to the Moon (1998) - s01e02.mp4
   /Grey's Anatomy (2005)
      /Season 00
         Grey's Anatomy (2005) - s00e01 - Straight to the Heart.mkv
      /Season 01
         Grey's Anatomy (2005) - s01e01 - pt1.avi
         Grey's Anatomy (2005) - s01e01 - pt2.avi
         Grey's Anatomy (2005) - s01e02 - The First Cut is the Deepest.avi
         Grey's Anatomy (2005) - s01e03.mp4
      /Season 02
         Grey's Anatomy (2005) - s02e01-e03.avi
         Grey's Anatomy (2005) - s02e04.m4v
   /The Colbert Report (2005)
      /Season 08
         The Colbert Report (2005) - 2011-11-15 - Elijah Wood.avi