The story takes place in an Internet company called "Yuntu". The 21-year-old intern Xiao Anyu and the 33-year-old project team leader Chen Yueqing met because of a sudden heavy rain. The umbrella Xiao Anyu held up for Chen Yueqing became the beginning of an unspeakable relationship between the two. He clearly saw the age gap and knew that this was a secret love that was destined to end in vain, so he restrained and alienated; but she was "soberly confused" and, knowing that there might be no result, bet all her tenderness and expectation on this silent boy.
Two years later, Xiao Anyu obeyed his family's arrangements, married Lin Ruoxi, a middle school teacher of the same age, and lived a stable and steady life. After Chen Yueqing suffered a severe emotional trauma, he became addicted to social software and continued to sink in virtual comfort. Just when she was in the most embarrassing situation, a mysterious "villain" named Lu Yan appeared - he was a competitor of the company, but he also used the sharpest way to pierce her confusion, allowing her to see herself clearly, and finally move towards true relief and rebirth.
Many years later, at an industry summit, the two people who had their own happy endings reunited again. Across the crowd, they looked at each other and smiled, and all the throbbing, regret, and pain they had felt melted into that relieved smile.