从未失手的珠宝大盗，本想干完最后一票便金盆洗手，却与中年失意的精英高管意外结盟，联手布下棋局。另一边，深陷职场困局的王牌警探，正凭借蛛丝马迹一步步将矛头对准他们，更有黑帮劫匪暗中蛰伏，伺机搅局。螳螂捕蝉、黄雀在后，当规则与道德的边界被打破，这场颠覆命运的惊天罪案，究竟谁能安全脱身？
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.
