A sudden car accident caused Mi You (played by Ding Ran), the cowardly and forbearing second daughter-in-law of the pharmaceutical giant Qi Zhong Group, to change her personality. Later, she found out that the car accident she encountered was not an "accident". At the same time, Han Yicheng (played by Li Jiulin), the new CFO of Qi Zhong Group, was secretly investigating the illegal drug testing of the group many years ago. So, after the divorce, Mi You and Han Yicheng joined forces to cooperate with each other to investigate the truth behind the scenes.