A song is heard in the distance. It comes from the Hekeng village, famous for its ancient earthen buildings, also called tulou. It is where the last original Hakka families live amidst the exodus of those looking for a more modern environment. Among them there is Zhang Zhouyin, an elderly man concerned about the state of the village's temple; or her daughter-in-law, Wei Yi, who spends her entire day guiding tourists through these awe-inspiring houses. And then there’s young Zhang Weibo, her son, who manages to find joy even in the simplest of things... Hekeng: a place frozen in time whose songs have endured for centuries.