In 2020, at the age of 28, Nan Xiang Wan, the human resource director of a world-renowned company that on the surface looks like a powerful and self-confident person, is a patient full of anxiety that suffered from academic discrimination. High-tech psychotherapy brings Nan Xiang Wan's memories back to 10 years before, allowing her to review her senior year in high school and face Class 7 which she was incompatible with. In order to re-enter Guanghua University, Nan Xiang Wan has to solve one problem after another, such as the classmates who kept disturbing her study and the unbearable memories of high school. During this process, Nan Xiang Wan gradually becomes friends with sports student Lin Xiao Ran, and the two grow up during battles of wits and courage with each other.
