Sunset has been struggling with her mental health and bad desires lately. Although, strangely enough it was the right call for her to go to that roof that day.
After Misty flees the sleepover, Zipp notices she's still in the garden outside the Crystal Brighthouse. Zipp ends up learning something unexpected about the strange newcomer -- and how she can help.
Since Twilight left after the battle of the bands, Sunset has been constantly writing to her in her journal, but suddenly something happens, something that causes Sunset Shimmer great suffering: her new friend stops answering her, but why?
Christmas is approaching in Canterlot City, and the girls notice how lonely Sunset Shimmer is during the holidays. Can they give her the best Christmas ever?
Sunset Shimmer finally returns home to Equestria to right her old wrongs, unfortunately the sins of the Human World follow her back and put everypony in Equestria in danger.
A year after the battle of the bands, graduation nears, a familiar face returns, a pure heart is corrupted, enemies become allies and the fate of all reality hangs in the balance.