Lu Chengyu, the president of Xingyu Technology, is well-known in the industry for his cold, decisive and unreasonable "workaholic" image. The influence of his native family has made him bury his emotions deep in his heart, but he is extremely demanding about his work. Su Wan, an elite secretary who graduated from a prestigious school, has become the only "standard answer" that can accurately match Lu Chengyu's needs with her meticulous observation and efficient and capable execution - she remembers that he does not add sugar to his coffee and avoids coriander, can predict the rhythm of his meetings, and can even read his emotions from the sound of keyboard tapping.
During the day-to-day interactions in the workplace, Su Wan was moved by Lu Chengyu's focused appearance during crisis after crisis, and she quietly developed a crush on him. Lu Chengyu also gradually let go of his guard due to her casual care - she would remind him to eat, run around to retrieve his mother's belongings when he lost them, and resolve problems remotely when he was trapped in another place. From fainting in the rain and being rushed to the hospital by him, to him covering her drinks during team building, to receiving his "excuse reward" gift on her birthday, the tenderness hidden in the details of the work has made the distance between the two continue to shorten.
However, the pressure of business marriage and the gulf of status differences put this quietly growing relationship under test. Su Wan chose to escape due to low self-esteem, but Lu Chengyu suddenly realized after she left that the secretary who always kept his life and work in order had become a presence that he could not let go of. When the "iron-faced president" puts down his body and faces the throbbing in his heart, can the two break through the boundaries between work and emotion, and transform from a tacit partner to a side-by-side lover? This is a heartbeat hidden behind the desk.
