This is the "DisplayEpisodeInfo" template. It should be called in the following format:
Edit the page to see the template text.
This is here so that while individual episode pages can still be edited, the episode data is stored in a separate protected area. At worst, vandals could just make the info not display, which could be easily reverted. All information I found about protecting only parts of a page on Mediawiki required additional extensions and were noted as being risky to use from a security standpoint.