In a world where they are little more than slaves to the more powerful unicorns, there are few options. When you are a former gladiator, saved from the breeding pens by a kind hearted old stallion, you have even fewer. Enter Rainbow Dash, ex-gladiator, a mare with beauty, and the strength to protect it in a world determined to drain all color from her life.

Freed from the horrors of bloody combat, Rainbow has taken those skills, and those killer instincts, and turned them to protecting the ponies she once killed. For a price of course. But sometimes, life throws the unexpected at you. On a mission for the Lady of Ponyville, Rainbow finds out two things. One, that purple unicorns are absolutely infuriating. Two, that they are also the bravest ponies she has ever met. Excluding herself, of course.