Cheng Lu is the perfect "backup" for her boss, and is familiar with all his schedules, preferences and even family conflicts. When her boss suddenly fell ill, she was pushed to the stage to take charge temporarily. In the process of dealing with various forces, she discovered that she already had the ability to take charge of herself, but was used to the role of "backup". The story tells how an outstanding woman broke through her psychological dependence and turned her "backup" files into the main program of her life.