Kay Kay grows up on camera in Guangzhou, filmed every year of her life since her birth in 1992 by a crew tracking one family through China's economic boom. She is an only child of factory-worker parents who pushed everything they had into her education, and the footage follows her from childhood classrooms through school pressure and into university, where she starts weighing the country's growth-at-all-costs model against the environmental damage she sees around her. The film has no narrator standing outside the story; it simply returns to Kay Kay and her parents year after year, letting small changes in the apartment, the city skyline, and her own ambitions register the scale of the transformation happening around them. Guangzhou itself becomes a second subject, shown expanding in the background of two decades of home-movie-style footage. By the time Kay Kay reaches adulthood, the film has quietly built a rare longitudinal record of what China's economic reforms looked like from inside one household, rather than from policy or statistics.