
It is beyond strange, as someone who hasn't committed to World of Warcraft's story (and considering how Shadowlands went, I don't feel bad about that decision) to sit here and wholeheartedly recommend to anyone with even the slightest shred of interest: Read the quest text.
A disclaimer, before I get into things: I hesitate to up and say that 'World of Warcraft has a good story, now' in the same way I might glowingly recommend Final Fantasy 14 (Dawntrail aside) to someone. Objectively, the game's narrative is a convoluted, 20-year mess with plenty of baffling decisions. It's a history that The War Within, as a game, is inescapably linked to—even Anduin's compelling character development is joined at the hip to Shadowlands.