What's a better way to start off a summer vacation with a slumber party? Nothing of course, but one night Fluttershy finds a heartbroken 3 year old boy while on her way to Pinkie's. With no choice, she decides to take him with her. The other girls all adore him and find out he's not just any normal three year old. He's one with powers! Unfortunaltey because of that, he is being hunted down by evil forces, so the Mane 7 must do everything they can to protect this little one from getting in harms way.
This story is inspired by Goebeltron's story "A Tale of A loving Sister," so there might be some parts where it will seem familiar. You should check him out. His stories are really good.