On the first day of the second grade of junior high school, the sunshine and the chirping of cicadas burst into the classroom amid the lingering warmth of late summer. Lin Ran, who loves to laugh and play, and has his own prickly mind, welcomed his new classmate Jin Xiaoyu - a cool guy who talks as little as words. His eyes are as cold as ice, but he will point out when she draws the wrong auxiliary line, drag her to cross the line when she falls behind in the 800-meter run, and silently use a pencil case to help her block the wind that blows up her notebook.
His bag contains her favorite strawberry bread, and the tips of her ears always turn red inadvertently; her heart contains the mineral water he handed her, the arm he helped hold, and those inexplicable moments. When the late summer wind blows over the desks over and over again, the story of these contrasting and cute deskmates seems to contain a heartbeat more lively than the chirping of cicadas - for example, why does he treat her "differently"?