The One-Armed Queen

In a land of magic, the great warrior Queen known as White Jenna has found a frail, one-armed child on the battlefield. She adopts the child and names her Scillia. As is custom with the Hames of the Dales, Scillia will be next in line for the throne. A great honor.
But Jem—Jenna's natural-born son—covets the throne for himself. Will he risk open rebellion to claim what he believes is rightfully his?
Can Scillia stop him?