Lighting Scar is a adult stallion who is a very good assassin who leaves no pony's alive. He kills a married couple and their newly born baby and happens to find in the same house a small filly coated in the blood of her parents and baby brother but without a cut or mark on her body, learning that this filly has special talents which are telepathy to any pony, teleportation without being a unicorn and the ability to feel no pain, he takes her in and begins training her to be a assassin and little Rainbow Magic takes her dog with her as a guard pet as she doesn't quite trust lighting scar. What will happen find out in The little Assassin.