ThecrooksinLondonknowhowitworks.Noonecarriesgunsandnooneresiststhepolice.Thenanewgangappearsthatgoonebetter.Theydressaspoliceandstealfromthecrooks.Thisupset'sthenaturalorderofthepolice/criminalrelationshipandthepoliceandthecrooksjoinforcestocatchtheIPOs(ImpersonatingPoliceOfficers),includinganarmoredcarrobberyinwhichthepolicemusthelpthegangstosetatrap.