The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This upset's the natural order of the police/criminal relationship and the police and the crooks join forces to catch the IPOs (Impersonating Police Officers), including an armored car robbery in which the police must help the gangs to set a trap. 　　译文(2): 伦敦的骗子知道这是怎么回事。没人带枪，也没人反抗警察。然后一个新的团伙出现了，更好的一个。他们装扮成警察，从骗子那里偷东西。这种颠覆是警察/犯罪关系的自然秩序，警察和骗子联手抓获 IPO (冒充警察) ，包括抢劫装甲车，警察必须帮助黑帮设置陷阱。