Diablo 4 Lord of Hatred DLC ending, explained — what happens next?

In 2023, Diablo 4 launched with a fresh storyline set 50 years after the events of Diablo 3: Reaper of Souls, peopled with new characters and a new antagonist. A little under three years later, the campaign of second expansion Lord of Hatred has ripped through this storyline’s cast and seemingly closed the book on almost all the story’s thread with a resounding thud of finality.