Six months after her defeat in her town, Starlight Glimmer comes to Ponyville seeking for revenge against the Mane 6; this time not only taking their Cutie Marks but destroying them as well.
Humiliated and defeated the girls simply disappear leaving the Kingdom at the mercy of its enemies for ten years… until the arrival of the Undead Knights. A group of seven unspeakable cruel monsters who protect Equestria at the costs of countless massacres, painting Equestria with the blood of its enemies.

Equestria’s ultimate protectors, the shadow of Harmony.

WARNINGS:

This story ignores Season 5 finale
And as all my other works this is a translation, the original can be seen here at FanFiction.