The lobby manager, Tu Xiao Ning, who works on the first floor of Huayuan Tower, is in a crucial period of probation. Ji Yu Heng, a talented young man working on the seventeenth floor of the tower, is a rising star in the business. They share a common desire to get married as soon as possible, and this is where two parallel lines intersect. 

In Xiao Ning's eyes, Yu Heng exceeds expectations as a marriage partner. In Yu Heng's eyes, the youthful Xiao Ning once illuminated his life, and marrying her is his only firm choice. Just as the two muster the courage to establish their marital relationship, Yu Heng unexpectedly becomes Xiao Ning's superior. These childhood friends from ten years ago, through a twist of fate, find themselves in a dual relationship as colleagues and newlyweds. They work together to explore the meaning of marriage and life. 

(Source: Chinese = Douban || Translation = MyDramaList) 

 Adapted from the novel "Ban Gong Shi Yin Hun" (办公室隐婚) by Qing An (轻黯)