Shining Armor has just had the best wedding he could ever, all thanks to his little sister and her friends. Now he's married to the mare of his dreams and it seems he couldn't be happier. But is he really?

With the little time there is before the wedding reception gets underway, Shining opts to visit Twilight both to thank her for her services as best mare, and because he wants to discuss something important with her.

Twilight agrees, eager to have one last talk with her B.B.B.F.F. before married life inevitably pulls him away. But not even she can anticipate what her brother wants to say, what he wants to apologize for. And it isn't just about the wedding.