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.
Mouse desperately wants to join The Midnight Clique, the infamous Baltimore dirt bike riders who rule the summertime streets. When Midnight’s leader, Blax, takes 14-year-old Mouse under his wing, Mouse soon finds himself torn between the straight-and-narrow and a road filled with fast money and violence.