How can an original "short (plot) summary" be written prior to the broadcast of the relevant episode? Answer: "It can't" edit

Earlier tonight this revision was made and the following notice was posted by me on User_talk:Jonnyt 123.

@ User:Jonnyt 123, User_talk:Jonnyt 123,

Your addition to Casualty (series 28) has been removed, as you have added copyrighted material from the Radio Times to Wikipedia without permission from the copyright holder. If you are the copyright holder, please read Wikipedia:Donating copyrighted materials for more information on uploading your material to Wikipedia. For legal reasons, Wikipedia cannot accept copyrighted text, or images borrowed from other websites, or printed material without a verifiable license; such additions will be deleted. You may use external websites or publications as a source of information, but not as a source of content, such as sentences or images —
you must write using your own words. Wikipedia takes copyright violations very seriously and persistent violators will be blocked from editing.|— 2:00 am, Today (UTC+1)—|

The user proceeded to blank their whole page — a long history of unanswered notices and warnings — just twelve minutes later [1]
 –
 – Gareth Griffith-Jones |The Welsh Buzzard|— 01:50, 15 August 2013 (UTC)Reply

@ CPATH10 (talk
It is in violation of copyright (The BBC's)
We do NOT copy material from publications. We compose our own, otherwise we are in violation of copyright.
How can an original "short (plot) summary" be written PRIOR to the broadcast of the relevant episode?
Answer: "It can't".
Compose your own after you have watched the episode. –
 – Gareth Griffith-Jones |The Welsh Buzzard|— 12:11, 20 August 2013 (UTC)Reply