As a fine drama about youth inspirational stories, "Beautiful Trainee" not only reveals various social realities, but also interprets the meaning of life that "happiness comes from struggle". Jin Meili (played by Ma Chunrui), a waitress at a fast food restaurant, was accidentally involved in a business bet between Fashion Group and investors during a meal delivery process. She was recruited by Linda (played by Mo Xiaoqi), the editor-in-chief of "FashionMore" magazine, and was required to undergo devilish training within three months to become a professional model. With a low starting point and no fashion sense, Jin Meili had to endure the ridicule and doubts from the outside world. Not only that, her boyfriend Dabao was content with the status quo, but was afraid of not being able to keep up with Jin Meili's pace, and obstructed her training in every possible way. Jin Meili's transformation was full of difficulties. In this process, Xiaoyu, a rich second-generation who worked at Fashion Group, constantly encouraged and helped Jin Meili, and the two gradually developed a good impression of each other. One was her childhood sweetheart boyfriend Dabao who brought her into the city, and the other was Xiaoyu, a rich second-generation who could support her in the workplace. Jin Meili had a hard time making a choice.