After his parents divorced, young Shen Sui moved to Chongqing with his mother. With her outstanding talent for the guqin, she was discovered by Huang Rui and joined Shi Fengjun, and she entered the practice room for a long time. She has experienced the successive withdrawals of the first generation of trainees, witnessed the birth of TFBOYS, and participated in the formation and integration of the TF band... As time goes by, the teenagers around her come and go, but Shen Sui always stands in the same place. However, as she grows older, a secret related to her identity quietly surfaces. Facing the increasingly approaching choice, can she successfully make her debut in the TF family?
The idea: to use a refreshing summer filter to slowly record the young people coming and going on the 18th floor of the mountain city - the sad departure of the first generation, the dazzling rise of TFBOYS, the emergence of the youth group of the era, and the new and familiar fresh faces of the third and fourth generations appeared one after another. And countless figures that stayed briefly and then disappeared quietly. The sun shines through the floor-to-ceiling windows of the practice room, and sweat and the sound of the piano mix in the wind of the Jialing River. This is a story about dreams and farewells written by generations of teenagers over more than ten years. Give it to every child who dares to pursue their dreams, to commemorate our youth that will eventually pass away but will always shine.