巴黎,特警队长西蒙.维斯,如同每个晚上一样,开始他的夜间娱乐场所的例行巡查。这是他的工作。一个夜晚,但却与别夜晚不同......很快,维斯明白了有人对他设了陷阱。被警察的警察和流氓两者折磨,维斯要自己保护自己,对抗警察,生意人和罪犯。Police commander Simon Weiss, head of the division that supervises Paris's demi-monde, starts out on his nightly tour of bars, discos and strip clubs, making sure once again that the owners don't bend the rules too far. Weiss knows he's between a rock and hard place: it's obvious that criminal gangs run rampant in his special domain, and even more obvious that they're protected by higher-ups in the department.