Proditor, Book 5 in the Heku Series, starts with Emily trying to re-gain Chevalier's trust, which turns out to be harder than she first imagined. With the ultimatum in place and the factions in a period of peace, Emily begins to befriend the Valle and the Encala, much to the dismay of the Equites Council.
The V.E.S. come more into play around Council City, and Emily is the only one that can infiltrate them and stop them from kidnapping innocent heku. Just as the V.E.S. backs off, Exavior begins going to severe extremes to get what he desires, Emily. Even the Valle can't seem to control him, so Chevalier steps up and takes charge.