Here are a few things that I've changed for this AU, outlined to (hopefully) avoid confusion!
-Atlanna and Tom have a little girl, a future Queen of Atlantis, Aurelia Curry.
-Aurelia and Orm are not related, but both in line for the throne.
-Orvax is alive and is the current ruler.
-Arthur Curry will feature in this story, but as Aurelia's cousin and not as Aquaman.
-It makes sense that hydrokinesis is an ability of all water-dwellers, so I'm making it a more widespread power among Atlanteans (plus it's super cool!) But Mera is exceptionally good with it.
-Orm is behind Atlantis's technological advancements.
-Aurelia and Orm are younger in this story than in the movie, Aurelia mid-twenties and Orm late-twenties.
-Since I plan on making this a trilogy, I'm going to expand the movie storyline and add parts and break up the quest to find the Trident of Atlan to stretch it out over the course of three books.
(Hope that helped clear everything up as we begin the story! I think that's all the major changes, but of course there will be smaller ones too. Thanks, and I sincerely hope you enjoy! :) Let me know what you think!)