Lynn Fisher, a widow with a son with leukemia, ventures into a forbidden sea, awakening an Ancient Golden Dragon. She gains X-ray vision, finding treasures for his treatment. She faces harassment from a fishing tyrant, her stepmother seizing her inheritance, and a mining king's schemes. Cole Carter, an antique dealer, supports her. They navigate auctions, foil plots, represent their country in an international competition, exposing a counterfeit ring, recovering national treasures.