A girl makes all her effort to retain the summer, but the first snow still arrives on time.

Summer 2019, Xia suddenly has a crush on a person who then seems vanished from the world. Fall 2019, Xia moves to Boston and throws herself into a faraway filmmaking dream with her struggling-actor friend Jie. While vainly searching for her crush, Xia makes all her effort to retain the summer, but the first snow still arrives on time.