A group of Lisu people without a registered ID (Hukou) live their primitive life in the mountains by the Nujiang River in Yunnan. In addition to misfortune and hardships, they also have simple happiness.
Kuomintang (KMT) veteran Long Yunsong participated in the Sino-Japanese war by glory, but he is sick and experiences injustice in old age. Can he really be recognized by the state before he dies?
This documentary is about a school in the mountainous area of Hunan and focuses on left-behind children in three families. Due to contradiction between backward rural appearance and urban development, the fate of the three generations interwoven together.