Twilight Sparkle, the Solar Regent, was frustrated. She’d never had a chance against Nightmare Moon, and now she had to live with the consequences of her failure and the moon goddess on the throne beside her.
Shining Armor, Captain of the Royal Guard, was frustrated. His liege was gone. His marefriend was somewhere doing something. His sister was showing all the early warning signs of one of her infamous breakdowns. Worst of all, everypony was keeping secrets.
Sweetie Drops, Equestrian special agent, was frustrated. Work kept piling up, and there seemed to be more and more monsters to fight every day. She needed help.
Cadance, the Crystal Princess, was frustrated. Being somepony’s snack was beneath her, but needs must.
Tempest Shadow, wanderer, was frustrated. Why did life always insist on kicking her while she was down? If it wanted to maintain even the pretext of fairness, her next destination would be her last.
Luna, the Lunar Diarch, was delighted. Everything had gone perfectly since her return from exile.