Fisherman Xu Bochuan accepts a marriage proposal, taking on the Tang family's debts and their dilapidated fishing boat. Undeterred by ridicule from others and exploitation by fish dealers, he relies on his fishing skills to make a living at sea. He discovers a hidden underwater trench teeming with abundant seafood, while adhering to the principle of taking the large and releasing the small. When a sudden storm strikes, he narrowly survives the raging waves and finds his missing father-in-law, Tang Shaotian. With nothing but a small boat to battle the wind and waves, Xu Bochuan uses his sense of responsibility and hard work to give his family hope for a better life.