Meteor Star is the son of Princess Twilight, Queen of Equestria officially. He follows in his mother's hoof steps in sticking to his studies about magic and he aspires to be an astronomist, meaning again, more studies. Twilight recognizes his priorities and lifestyle as how she used to be all those years ago, so what's a worried mother to do? Why send him to Ponyville of course! There he will be surrounded by his honorary aunt's, and she believes he will get along nicely with his honerary cousins there too. . .and learn what she did so long ago.
Turns out the road to learning friendship starts with unexpected adventure!