After a drunken one-night stand during her postgraduate studies, Sarah Chen secretly leaves Ethan Vance, the CEO of the Lin Group, and gives birth to a child. Six years later, Sarah Chen works as a courier and mistakes Ethan Vance for her blind date, rekindling their romance. Ethan Vance, also facing pressure to marry, hides his identity and hastily marries Sarah Chen. They spend their days delivering packages together and embarrassing classmates. When Sarah Chen is about to be fired from the company, Ethan Vance makes a grand appearance to help her resolve the crisis. On Ethan Vance's recommendation, Sarah Chen starts working at the Lin Group. The couple joins forces and strikes a blow against Eleanor Vance's brother and a fake woman at Eleanor Vance's birthday banquet. After joining the company, Sarah Chen faces harassment from colleagues, but Ethan Vance helps her defuse the situation. After a series of twists and turns, Sarah Chen finally learns that Ethan Vance is the heir to the Lin Group, and Ethan Vance also learns that Sarah Chen is his one-night stand partner and Chloe is his daughter. With the help of their daughter Leo, the couple reconciles and becomes a real couple.