This story is (obviously) focused on Gwynevere, the Princess of Sunlight.
(Your character will probably be a male, but I will try to make most of it gender neutral)
You are the Chosen Undead, and the most loyal member of her covenant. She has called you to her quarters, and even though you had no idea what to expect, you made your way there immediately. The silver knights escorting you paused at the door, awaiting your instruction.