一个好汉三个帮。绰号沙胆(郑浩南 饰)、大只(邓浩光 饰)、迷信(彭建新 饰)、有钱(王米高 饰)和处男(楼南光 饰)的五个年轻人聚在了一起,他们都怀着一腔热诚投靠了警察。然而普通警员的平静生活又让他们感到不满足,于是,他们同时投考了飞虎队。经过层层筛选,五人成功入选。训练营的生活既严格、又艰苦,教官都是冷冷冰冰的,但这一切并没有击倒五名热血沸腾的年轻人,他们都以优异的成绩毕了业。他们毕业后的第一项任务,就是解救被匪徒扣押的十几名人质……Five young and idealistic policemen: Bravo (Mark Cheng), Macho (Anthony Tang), Superstition (Pang Kuen Sun), Wealthy (Michael Wong) and Old Bachelor (Billy Lau) are determined to join the special squad. Instructor (Dean Shek), demands discipline, efficiency and obedience. Despite the hostility and hardships, the young officers begin to realize the instructor is passionate at heart. Eventually, they all respect him for his devotion and inspiration. On a silent night, they are summoned to an emergency assignment. A dozen of innocent citizen are held as hostages. The death of Bravo in their first successful mission sadden their high spirit and celebrating mood.