So let's see... We've almost deduced that we're going to fight Amaria fairly early in the episode, and that we may or may not gain the ability to use Dive outside of battle. Plus, Titania looks as though she really doesn't want to have to push Amy off the ledge, which we pretty much all believe is the Celestine Cascade. There's also going to be some Meteor fighting.
So, here is my most current theory on how this plays out. We enter Amaria's house, and she gives us Surf to help us get to the resistance, past Ametrine Mountain. Before we leave, she challenges us to a gym battle, and gives us a badge for beating her along with the ability to use Dive outside and raises the level cap to 75. Then the house is sieged by Solaris and Team Meteor grunts, who have come for the Sapphire bracelet. Titania, while knowing that Amaria can look after herself, can't stand the possibility of Amaria possibly getting hurt at the hands of Team Meteor again, and thus pushes Amaria over the waterfall, hoping that she'll be able to think quickly enough and have one of her Pokemon save her at the bottom. She then sends the rest of Meteor off, while the player fights Solaris. She then goes to find Amaria, while the player goes to Calcenon, only to find that there's no way through the barrier that the PULSE Mr. Mime set up. By Diving in Tanzan Lake, we find something of Tara's and bring it to Simon; in his gratitude, he decides to help the player get past the PULSE. After getting past the PULSE, Simon is labelled a traitor and is killed while the player narrowly escapes, meeting with the rest of the resistance. From there, it's kicking Meteor-ass and taking names!
