Xu Wu, a chief resident in cardiology, and Song Tingxi, the newly appointed associate director of cardiac surgery, accidentally end up in a flash marriage after a matchmaking mix-up. They agree to keep it secret until she is promoted to attending physician. In their high-pressure workplace, they support each other with their professional skills, and their awkward marriage of convenience gradually becomes a sincere relationship. Through her stepbrother’s harassment, a coworker’s complaint and other troubles, Song Tingxi stands firmly by her side. Eventually, they make their relationship public. Working together to save patients, they help each other become better doctors and move toward a freer future hand in hand.