The Wonderbolts extend a formal apology to Rainbow Dash after the events of Rainbow Falls. After some convincing, Rainbow takes full advantage of the situation.
Octavia Melody is a dreamer. Her mind takes her places, places that she's always wanted to be. Unfortunately, her body doesn't follow. This time, however, she'll have to make her dreams into a reality.
Octavia needs some place to rest from her duties to the orchestra, her daily chores, and an annoying roommate. The night offers the perfect respite. Princess Luna, on her flights over Canterlot, hears a thin reed of music.
Dr. Horrible was at the height of power. His arch-nemesis was defeated, he had gained a seat in the Evil League of Evil, he had everything he could ever hope for. Billy was crushed.
They came here expecting an easy victory. They thought that they could hide, that nopony would notice them. They were wrong. I noticed, and it's my job to get rid of them.
Octavia Philharmonica, the Canterlot Conservatory's rising star, is about to begin a whole new part of her life; one that involves an old friend, an ambitious businesspony and a certain eccentric DJ.