On the first day of her freshman year of high school, Gu Xingyao was assigned to a class she thought was perfectly ordinary. She had always been the kind of girl who shied away from attention and only wanted to quietly get through high school. But fate brought her together with Lin Muchuan, a boy who sat by the window. His features looked delicate when he lowered his head to write, and when he smiled, he was like summer sunshine.
Lin Muchuan and Gu Xingyao seemed to live in completely separate worlds, but after one unexpected encounter after another, they gradually grew closer: the easy understanding they shared during class activities, the chance walk home together on a rainy day, an accidental glance by the sports field... Gu Xingyao realized that youth held so many feelings that could not be put into words, yet felt so real.
Their story began on a basketball court in the spring breeze. They cheered each other on at the sports meet, busied themselves with club activities, and passed secret messages on little slips of paper... Gu Xingyao always thought she had hidden her feelings for Lin Muchuan well, until the day of graduation, when he handed her a photography collection filled with everyday moments she had never noticed.
Their story has no clear ending, only the words hidden in the wind: "If we meet again, I’d be happy if we were still classmates."