The Rainbooms including Human Twilight went out of town because their on tour to show off their band. Sunset talks to Princess Twilight that she going to be away for a couple weeks. She also thought of a way of her princess friend to meet more people she didn't met when she was gone. When Twilight accepts Sunset's advice, Starlight and Spike will take over her job as co principles in the School Of Friendship while Twilight enters the Mirror World and straight to the beach thanks to Sunset giving her the map.

Thanks to Daniyel099 for editing the final two chapters.
https://www.fimfiction.net/user/292246/Daniyel099