在这部红番区拳霸动作片中,由“永盛年代”电影公司出品，罗伯特．雷德勒执导。讲述坚麦斯于新学校上课的第一天，便发现有一危险人物，他以打黑市拳为主，而且亦是出色的冠军拳手。不久坚请来学校的管理员及退役警察比利教自己练自卫术，比利却发觉这次安排充满了危险性，皆因有人欲置他于死地。本片故事情节是以学校为背景展开，所以在表现手法上也与其它“拳片”有所不同。从总体上来说还算是一部值得观看的电影。
Ken has just moved from Kansas with his mother. He talks to a girl named Julie, not knowing that her boyfriend Tom is very possessive of her. Tom is learning karate from Lee, a sensei whose brother was killed by a rookie cop named Billy. Billy has since then become the janitor of the school that Ken, Julie and Tom go to. When Ken gets beaten up by Tom for talking to Julie again, Billy helps Ken by teaching him how to defend himself, which eventually leads to a battle between student vs. student, and sensei vs. sensei.
