Spoilers 2. Not in order.

Addam and Alyn grow apart. Addam remains loyal to Rhaenyra, while Alyn sides more with Corlys.
Daemon sends a page boy to Harrenhal to find out if Alys is still alive.
Jaehaera’s disappearance pushes Rhaenyra even further into paranoia, she becomes suspicious of everyone.
Gwayne doesn’t die this season.
Rhaenyra sends Daemon a message demanding Ormund’s head.
Alicent tries to get to Daeron, but Ormund won’t let her.
Rhaenyra learns of Criston’s death and smiles.
Alys hints that she’s pregnant and shows Aemond the prophecy too. He starts believing their child is the prince that was promised. By this point, he’s completely besotted, just like in the book.
Rhaenyra orders Aegon to be captured, but he has disappeared once again, and there’s no sign of him, Larys, or Sunfyre.
In one of Aemond’s hallucinations, Alicent embraces him as a war hero while holding an eye in her hand (most likely Luke’s).
Hugh and Ulf betray Rhaenyra.
Rhaenyra and Corlys have another confrontation, and she slaps him.
Ormund has Jaehaera.
Alicent reflects on her faith in the gods with Alys.