Everyone knows the story of Princess Luna turning against her sister when her moon couldn't stay in the sky longer and that her anger changed her into Nightmare Moon, but they don't know the real reason behind it. Back a thousand years, before becoming Nightmare Moon, when she ruled with her sister, Luna had a special relationship with a new personal guard that seems to be involved in everything.
The story will follow through the eyes of both Princess Luna and her guard Dragon-Heart as they grow close together and work with their duties as princess and guard