"You probably thought the pain would disappear with you, but it didn't. It just passed on to someone else." — Twilight Sparkle returns to the human world following her conversation with Sunset. Sequel to Last Light.
Sunset Shimmer has fallen into a self-destructive spiral since her friends left her, and she attempts to end her life. While unconscious, she is confronted by Princess Luna. They have much to discuss, whether Sunset likes it or not.
When confronted by Sunset, Wallflower Blush realizes that absolutely nothing she does matters. Rather than lash out at Sunset's friends, she turns the Memory Stone on herself and completely erases her own mind.