Liang Guodong, chief designer of China's industrial machine tools, retired from his career for five years to devote himself to his family. During that time, he provided his self-developed CNC system to his wife Su Huimin's company, Huasheng Intelligent, free of charge. At their son's graduation ceremony, however, he was excluded from the family photo. Heartbroken, Liang Guodong withdraws the free license and returns to the research institute. As his identity as chief designer is gradually revealed, Huasheng faces one crisis after another, and everyone's past prejudices are shattered. After weathering the turmoil, the couple establishes clearer boundaries in their marriage. Liang Guodong remains devoted to scientific research, Su Huimin rebuilds her company, and their son Liang Yuanhang completes his personal growth. In the end, everyone sets out on their own path in life.