celebrity editor lu yunzhi (played by peng chuyue) is a rigorous and self-disciplined person, especially the time is prosecuted every second. it is a regular work and rest, a "human-shaped clock with early going to bed and getting up early ddd。 in contrast to him, the new little writer he zhen (played by wang cheng) has always been optimistic and casual. in order to write day and night, and his work and rest are chaotic all year round, he calls himself a "nocturnal animal". two people with completely opposite personalities and daily routines should not have had an intersection, but on a day of total solar eclipse, they exchanged biological clocks because of a pair of mysterious ancient clocks and had to start a life of cohabitation. from the initial reluctance to the later mutual affection, a sweet love affair grew between the arrogant editor-in-chief and the vibrant sweet girl.