Su Yiran is an ordinary woman born in the late 1980s or early 1990s. She once believed that her first love was her marriage partner, but the arrival of middle school and college life made Yiran's ideas continue to grow. There were three people who accompanied her in her life, and they were also the people who worried her the most. A series of arrangements of fate caused these three people to disappear, reappear, and disappear one after another. In the end, who stayed by Su Yiran's side and became the one who held his son's hand and grew old with him? How did the background of the times and the twists and turns of the times change the fate of Su Yiran, the destined military wife?