Octavia has finally been promoted to first chair, unfortunately for her, that chair is in the new (and as of yet unformed) Royal Ponyville Orchestra. Can Octavia lead the new orchestra to greatness? Probably not.
Everypony has secrets. For instance, Octavia's friend Bon-Bon is a secret agent, and she needs Octavia to keep a few secrets of her own. Oh, and save Equestria. Nothing too big.
Career-criminal Silent Shadow has been captured again and is expecting another vacation at one of Equestria's rehabilitation clinics. Instead, she has a meeting with Celestia to learn why the kingdom is crime-free.