Young fitter Chen Tieniu stands by his principles when it comes to his engagement and a workshop promotion recommendation. After breaking off his engagement, he resigns and takes on repair jobs independently. Through his craftsmanship, he meets Gao Zhengping and gradually builds a partnership, starting with repairing gearboxes and moving on to trial work for a steel mill before co-founding a repair company. His younger brother, Chen Tianci, rushes for quick success, makes a costly mistake, and loses money. Chen Tieniu helps him shoulder the responsibility through a documented loan, encouraging him to learn his craft properly and work diligently. Li Xiulan reflects on her actions and tries unsuccessfully to win him back. Two years later, the company is steadily growing, and Chen Tieniu has earned respect and a fulfilling life through his own abilities.