In the Galactic Federation, royal families practice genetic matchmaking. Hera Upton, a fake heiress, is forced to replace the real heiress and marry the aloof young commander, Caesar Voss. Hera is secretly a mech genius. She refuses to be a pawn and demands a divorce on their wedding day. Her resolve shatters his icy facade, sparking an obsessive pursuit and a journey of mutual redemption.