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.
When a prisoner vanishes without a trace, Detective Frank Morley is sent to a decaying prison on the verge of shutdown. What begins as a routine investigation quickly spirals into a dangerous search for answers. As reality fractures, Frank is haunted by the secrets that lie within the prison walls.