Former Green Beret Louis Stevens returns to his hometown of Miami after completing military service in Brazil, only to learn that his old high school has become a haven for gangs and drug dealers. After Stevens uses his capoeira skills to kick several drug dealers off of the school property, Kerrigan, one of Stevens' old teachers, sees the impact that Stevens has on the students. Kerrigan gives him the task of teaching Capoeira to a handful of the worst at-risk students at the school.

被分配到實驗小學當老師的韓苗苗（李羚 飾）向陳校長（江顏輝 飾）報到，校長讓她先到三（2）班聽課。該班原來的老師方玉（朱玉蓉 飾）被淘氣的學生氣跑，聽課的苗苗被迫登上講臺，但孩子們的惡作劇并未收斂，她極力克制內(nèi)心情緒，耐心地對孩子們說：從今天起我是你們的老師，不過我還想成為你們的朋友。她的言傳身教很快使班風得到良好轉變，但許培培（關強 飾）的父母幫孩子做家庭作業(yè)；包司令（張鐘英 飾）的孫子包瑞（馬忱 飾）有很強的政治優(yōu)越感，不好好學習。幾經(jīng)勸誡無果，一度使苗苗產(chǎn)生調(diào)離念頭。但三（2）班孩子們真誠的挽留，最終打動了苗苗......