Twilight Sparkle will be the first to tell you not to judge a book by its cover. However, sometimes the cover can be quite informative. For example, if you are the main character of a story, and the story title says you will not fight Discord, you probably will not fight Discord, and should abandon any plans to do so.

Unfortunately for her, unlike Discord, Twilight Sparkle cannot break the fourth wall in order to discover the name of the story she is in. As a result, she spends multiple thousands of words trying to fight Discord. In her defense, Discord DID agree to fight her, and the story was written on commission by someone who specializes in fighting erotica, so her confusion is understandable.