Young Chen Haisheng possesses special golden eyes that allow him to see objects buried on the seabed. To raise money for his mother's medical treatment, he goes to sea with his cousin and discovers a sunken treasure ship, only to be betrayed when his cousin cuts the rope and steals the proceeds. By a stroke of fate, he obtains the Sea King's Pearl and unlocks the ability to sense the ocean. Accompanied by Li Jianing and others, he explores deep-sea ruins and uncovers the secret of the Chen family's generations-old duty to protect the sea. When criminals set their sights on the underwater treasures, Chen Haisheng stands firm, refusing to be driven by greed. He cooperates with cultural heritage protection authorities to safeguard underwater relics and maintain order in the ocean, embarking on a new life in legitimate underwater exploration.