Saintess Lyra Arden has one divine command: kill the last dragon king before he destroys the realm. Instead, she discovers Kael Draven imprisoned beneath the royal palace, weakened by the same holy magic she was taught to worship. When freeing him accidentally binds their lives together, Lyra has thirty days to complete her mission—or die with him. Then Kael offers an outrageous alternative: marry him, infiltrate the court as his bride, and help him prove that the gods have lied for centuries.