This story is a sequel to Equestria: A New Generation
Sunset now joined the new generation ponies as she taught them more about the magic of friendship as they enjoyed their time together, while also seeing how much Equestria developed now that the magic and the magic of friendship returned. And now Sunset helps carried on Twilight's legacy now that Equestria needs to recovered what is lost while also trying to figure out how it came to be and what happened to Twilight and her friends while enjoying time with Sunny and her friends along the way.
To keep in mind, this is a side story that takes place after the movie of MLP: A New Generation, but also in between the Make Your Mark series so this story take place between them.
Image credit goes to Bookhorse125
(Note: the inspiration goes to Phantom-Dragon since he came up with the idea from his last story Equestria: A new generation, so give credit for him for this inspiration)