What was that finale!?

I finished season 5 of SS. The ending was SO dramatic!! Who is even left at the O Group? I'm looking forward to the reunion and hearing Christine's side of the story with Emma. Also, Emma and Micah?? I need more of THEM! Can't believe I'm saying that about Emma, but she's really grown on me this season. I'm still trying to understand what the point of the Chrishell/Jasonn storyline was exactly??