I want to right new stories, but...

Okay so I was on a three hour drive today, just me, some mostly instrumental music, and my thoughts. I came up for concepts on like, three different stories. The only thing is, I’ve fallen behind in the show again.

Can someone give me the rundown of any cannon/ lore changes? I haven’t seen the movie and my knowledge of the show is like halfway into the season after all the Changlings turn good...