In a fishing village in the 1970s, Lin Hai is left with nowhere to turn when his stepmother, Li Shufen, and her family force him out during the family division. By chance, he obtains an underwater radar system and awakens its ocean-scanning abilities. With extraordinary courage and skill, he ventures out to sea to catch rare seafood such as large yellow croaker, black gold abalone, and tuna. He repeatedly overcomes dangerous situations and establishes himself through his own abilities. His wicked relatives eventually suffer the consequences of their own actions, while Lin Hai and his family build a peaceful and prosperous life.