It's been a year since Princess Twilight Sparkle and Garrett Shimmer started their relationship with each other. Now things start to change as Garrett's big sister Sunset comes back to Equestria, this time to stay. But she has a secret that she's afraid to admit to her little brother and his girlfriend. Will she admit her dark secret to the ones she loves most, and will they accept her? And when the time comes, will Twilight, Garrett, and Sunset be prepared for the return of Lord Tirek [Sequel to Simply Meant To Be]