Ruby's a traitor, the other demons want her head on a platter, and none of them even bothers to ask why she's doing it. Almost none.
Before anyone built towers or became kings that hide from councils or thought five hundred steps was some kind of actual challenge, there was a prince, a sorcerer, and a sea serpent in a river. But really, it started well before that. Because first, there was a prince, and silence, and a secret that was no secret at all.