Su Yu is an art student with a dream, embarking on an intensive training program in Hangzhou. One summer, a class activity quietly gets underway, and Xiao Qin's arrival brings color to her world. The first time she sees him leaning by the window, quietly listening to music, he looks like a boy stepped straight out of a painting, and the image is etched deep in her heart. From then on, the seeds of a secret crush quietly take root within Su Yu. Every time their eyes meet, she feels the gentlest flutter in her heart. Yet this feeling is like the colors in her paintings: bright, but tinged with an almost imperceptible sadness. As she pursues her dreams, Su Yu silently cherishes this tender, youthful crush, experiencing the bittersweet pains and joys of growing up.