Lu Huaijin, the aloof academic god, unexpectedly became roommates with Jiang Ruoyu, who was firmly at the top of his grade. They discuss difficult problems with each other in class, and work on questions side by side in the study room. Although he is regarded as cold and distant by others, he is very patient with her. The two people, who are equally matched, gradually fell in love in each exam and each difficult problem. With youth as the preface and knowledge as the guide, the campus daily life of top academics hides the gentleness and joy of the flowing water.