Fluttershy is a shy pony who dislike fighting and has two best friends. When going a on trip to a factory that studies chemicals, Fluttershy pushes another worker out of the way of some chemical spay and she unknowing has something happen to her, but the doctors pass it off as she was fine. Her friend, Cheerilee, doesn't think so and take Fluttershy home to rest for a bit. While she was resting, she had a horrible nightmare of her husband and it triggers the chemicals inside her, casing her to transform. She goes out on a rampage, destroying everything she sees. Cheerilee catch's word about this and call her other friend, Coco Pommel, to find her. During Fluttershy rampage, she sees a family in trouble and rescues them. After Cheerilee and Coco calm her down, they take Fluttershy back to Cheerilee lab to look over her. They decide to help Fluttershy control her rage and even have it were she can make up for what did by showing everypony in the city that she is a hero. For this is how the Mare of Rage, Saddle Rager was born.

Part of my Power Ponies stories, three of six.