One day, Pinkie Pie and Starlight Glimmer decided to annoy Trixie. They introduced Pinkie to a new torture device that could kill ponies, including her friend, Nightmare Moon. In a moment of anguish, she touched the device and became its victim. At the same time, Nightmare Moon grew larger, and attacked the farmhouse. To combat Nightmare Moon, Twilight Sparkle designed a mirror to block her, and put it inside the hex mirror with Pinkie Pie's help. By destroying the mirror, Nightmare Moon began to shrink. Despite Twilight's attempts to free her friends from her prison, Pinkie Pie did not get help. At Pinkie's urging, the group fled the house and were saved by a rescue party led by Sweetie Belle. They informed Trixie of the situation and she directed them to her hidden shack.
Outside, Trixie told the ponies that Nightmare Moon had started to grow wings again and was about to use her powers to regain her lost strength. "Nightmare Moon" ultimately turned out to be Scootaloo, who claimed that she had been named "Nightmare Moon" by a few moons before Twilight could stop her. Twilight was shown on Trixie's throne on the ground, unconscious and crumpled, being examined by Princess Celestia and Applejack, respectively, who explained that he had just passed away.
Quotes
"In a perfect world, everyone would choose hope over fear." — The Cutie Mark Chronicles
"The taste of victory is sweet, but it must always be followed by the threat of defeat." — The Cutie Mark Chronicles
"For those of you without ponies, try living in a cave." — The Cutie Mark Chronicles
"You're too big to be hurt, you're too smart to be dumb, and you're too strong to be weak." — The Cutie Mark Chronicles