Su Ye (played by Xin Ruiqi) is a very kind-hearted girl, but because of a conspicuous scar on her face, Su Ye often feels very inferior. By chance, Su Ye got a lipstick that can travel through time and space. Su Ye used the lipstick to return to the time before the scar on her face. At the same time, she changed her career and became a salesperson in a 4S store. She decided to use this once-in-a-lifetime opportunity to change the future and avoid tragedy. In the process, Su Ye met the overbearing president Han Shao (played by Hu Haobo), who was the man who completely changed the trajectory of Su Ye's life. Su Ye found that her friend Wan Zi from her school days had turned against her. In order to pursue the cause and effect, Su Ye traveled back to high school and wanted to repair the friendship between herself and Wan Zi from the origin.