Young teen girl Xiu Xiu is sent away to a remote corner of the Sichuan steppes for manual labor in 1975 (sending young people to there was a part of Cultural Revolution in China). A year later, she agrees to go to even more remote spot with a Tibetan saddle tramp Lao Jin to learn horse herding.

On a full moon night, a group of friends must cycle away from the city lights in search of a place dark enough to watch a meteor shower.