Set in the People's Republic of China during the 1990s, the film centers on a 13-year-old substitute teacher, Wei Minzhi, in the Chinese countryside. Called in to substitute for a village teacher for one month, Wei is told not to lose any students.
| Actor | Role |
|---|---|
 Wei MinzhiWei Minzhi | Wei Minzhi |
 Zhang HuikeZhang Huike | Zhang Huike |
 Tian ZhendaVillage Chief | Village Chief |
 Gao EnmanTeacher Gao | Teacher Gao |
| SSun ZhimeiSun Zhimei | Sun Zhimei |
| FFeng YuyingTV Receptionist | TV Receptionist |
| LLi FanfanTV Host | TV Host |
| ZZhang YichangMr. Zhang | Mr. Zhang |
| ZZhanqing XuBrick Factory Owner | Brick Factory Owner |
| LLiu HanzhiZhang Huike's Mother | Zhang Huike's Mother |
| MMa GuolinBus Station Man | Bus Station Man |
| WWu WanluTV Station Manager | TV Station Manager |
| RRu LiuTrain Station Announcer | Train Station Announcer |
| WWang ShulanStationery Store Clerk | Stationery Store Clerk |
| FFu XinminTV Station Director | TV Station Director |
 Bai MeiJuxin Restaurant Manager | Juxin Restaurant Manager |
| ZZhang MingshanStudent | Student |
| JJiao JieStudent | Student |
| RRong HuiminStudent | Student |
| SSun ZhiweiStudent | Student |
| MMing XinhongStudent | Student |
| TTian XueweiStudent | Student |
| LLi MelStudent | Student |
| LLingyu LiStudent | Student |