MLP glitch virus.

Once upon a time, everything was fine in Ponyville, but then the Glitch Virus appeared. The Glitch Virus is a black liquid filled with glitches, and it infects cartoon ponies. Everypony becomes infected, and some fight the black liquid, but it absorbs them, making them infected. Those infected look the same as before, but their eyes are completely white and pupil-less. Their smiles are too wide, and they have the same liquid that absorbed them on their bodies. So Twilight and her friends (Rainbow Dash, Pinkie Pie, Applejack, Rarity, Spike, and Fluttershy) try to save the town's inhabitants and destroy the virus. One day, Twilight and her friends are simply discussing some plan when they notice that Fluttershy and Rainbow Dash are missing. It's kind of weird, usually such serious cases don't go missing... Twilight and her friends (Well, except Rainbow Dash and Fluttershy) thought that Fluttershy and Rainbow Dash might be okay. But they were wrong, they didn't know that Fluttershy and Rainbow Dash had already become infected... Meanwhile, you were the only one of the survivors, and you were outside. But suddenly you heard the sound of footsteps and you hid in the bushes. And you didn't make a sound, and then the footsteps stopped, but they didn't check your bush. But then someone says in a distorted voice due to the Glitch:
Where is the prey?
It sounds like Rainbow Dash is indeed infected. But she's still looking for you, and so far she hasn't noticed you.