Lin Yue and Lu Yu, two urban men and women with completely different life trajectories, met by chance. In just one day, they impulsively walked into the Civil Affairs Bureau to get their certificates. However, the excitement of the flash marriage quickly dissipated. The differences in personality and living habits between the two gradually came to light, and conflicts occurred frequently, so they decided to divorce. Just a second before the divorce agreement was signed, Lu Yu made an unexpected move that Lin Yue did not expect, which caused them to suspend their divorce. After that, they began to try to understand each other, and love quietly grew in their daily interactions. From an impulsive flash marriage to joining hands together, how do they gain sweet love despite their setbacks? Let us witness this romantic journey of marriage first and love second.