Conservator Mara comes to Blackthorn Manor to restore an ancient covenant mirror. After stopping a botched activation, she learns the mirror and signet rings select the First Guardian, with Cassian, Ethan and Felix assigned as her risky escorts. She soon finds her contract is incomplete and uncovers erased covenant rules: the mirror only verifies her witness status, and any bond needs her full, voluntary consent. Harcourt’s Vivian schemes to seize power, kidnapping Mara to break her temporary link with Cassian, though Mara survives by leaving clues for rescue. The three candidates each reveal their flaws. Mara sets firm boundaries around consent and autonomy. At the public rite, Cassian is confirmed First Guardian. Mara knowingly accepts permanent bonding and the Co-Guardian role by choice, out of love for Cassian, while keeping her career, property and final say over their bond. The mirror validates qualifications, yet her choice remains entirely her own.
