This is a story about the youth of 17-year-old boys, and how they harvest love, friendship and family affection in their last step towards adulthood. When transfer student Sheng Xia first entered the Affiliated High School of South China University of Technology, she met the school's celebrity Zhang Shu, a legend from a poor student to a god of learning. She misunderstood him as a bad academic bully who "held multiple positions", and he also noticed this soft but slightly temperamental transfer student. Sheng Xia, who had just arrived, faced the higher-intensity learning environment of the Affiliated High School of South China University of Technology, coupled with the opposition between her divorced parents on education issues, she felt very hard, but she still stubbornly held on. Fortunately, in the warm collective of Class 6 of Senior 3, there are good friends who can relieve her inner anxiety like a calf, and there are classmates who can encourage her with fun and decompression. More importantly, like his name, Zhang Shu is like a timely rain that falls on her barren and dry world. The throbbing of youth spreads this summer. They cherish each other. There are figures riding bicycles on Xiangzhang Avenue, there are moments when they look back at each other in the teaching building, there are deeds of young people going against the flow and being brave in Yifang Bookstore, and there are his bold words under the national flag... The teenagers encourage each other and go through the time of senior year together. From teenagers to young adults, they each hold their ideals in their hearts and stride forward, just like this hot summer, shining and dazzling. The story of boys and girls working together to overcome the difficulty of the college entrance examination and rushing from school uniforms to wedding dresses.