tang yibai (played by xiong ziqi) is a member of the swimming team of the south physical education university. after years of preparation, he decided to return to the arena at the time of the college student swimming league. his coach and friend qi ruifeng (played by huang shengchi) became his solid future. ddd。 by chance, tang yibai met an intern reporter named yun duo (played by tan songyun). after a while, the two formed an indissoluble bond. yunduo rented an apartment rented by tang yibai's mother without knowing it, and the two children began to live together under the same roof. during the process of getting along, pure feelings gradually emerged between tang yibai and yun duo. however, the competition was imminent, and a series of unexpected events made tang yibai realize that he could only choose one between career and love. in the end, what choice would this man who regards swimming as his career in his life make?