The coming of age drama portray the relentless pursuit of the layman, the oppressed section of society who is in a constant struggle and fight to reclaim their unique identity and rightful place in a world meant for all.

一伙自称呢个“北上支队”的犯罪团伙在京广线上疯狂作案。公安局派马小龙跟车侦查。陪重病妻子南下的老刑警宗民也上了车，在车上遇到了表姐梅蓉。做刑警耳目的“一把手”被麻醉，胡飞和贾云再次得手。宗民把妻子交付梅蓉，和马小龙去追罪…