Qin Shi (played by Yang Mi), a single female lawyer, is devoted to her career. She is convinced of the 80/20 rule and is determined to be an important part of the law firm and enter the top of the pyramid. In order to help her advance in her career, a kind-hearted senior invented a marriage for her without Qin Shi's knowledge. However, by mistake, at a party, this fictitious "husband" Yang Hua (played by Xu Kai) suddenly appeared, and Qin Shi racked her brains to make the "lie" continue. The values of workaholic Qin Shi and Yang Hua, who is keen on home life, are very different, but under the pressure of their families, the two people who are unwilling to get married hit it off and went straight to the Civil Affairs Bureau to get a marriage certificate, thus becoming a legal couple. However, lying is destined to pay a price. People around them gradually noticed that something was wrong with the two, and Qin Shi's ex-boyfriend also joined the law firm at this time. Surrounded by life and professional crises, Qin Shi and Yang Hua gradually opened their hearts to each other, gradually developed feelings, healed each other, and worked hand in hand towards a better and happier life.