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.
A loner struggles with childhood tragedy. Seeking refuge, he immerses himself in martial art films. A life changing moment releases unknown abilities, taking him closer to solving the mystery of his past. But the truth will come at a cost