Semicatalyst

After the Kings took power centuries ago, they exiled anyone that was not a human from their lands, and forbid any mention of them ever again. Only few even remember what they once coexisted with; dragons, elves, gnomes, wizards, and magic beyond comprehension of the mind.
Luna is a half-elf living within the walls of the kingdom. As an abandoned child raised by a witch and owner of a magic-based underground market , Luna acted as a spy and resourcer for her, finding any information or items she needed.
One fateful evening, Luna's world gets turned around, and she is suddenly cast into a world that has always eluded her, one full of the creatures and people that had been banned all of those centuries ago. It's her job to save them from the reigning King's terror, and she has no idea how.