The film is an inspirational sports film for teenagers based on a true story. It tells the story of how down-and-out coach Zhang Xiaohong led Wang Cai and other teenagers from a low-income ethnic group in Yunnan to walk out of the mountains after going through all kinds of hardships, and finally won the national championship. It proves to the world that there is no distinction between high and low in tennis, and at the same time, they complete their own spiritual growth on the road to pursuing their dreams.