Louis Salinger (CLIVE OWEN) is a man on a mission and that's to bring down the International Bank of Business and Credit. That's a Luxemburg based financial giant reportedly involved in military arms dealing and the destabilizing of governments, all to capitalize on the related debt that would arise from such far-reaching, global actions.
The only problem is that any witness who's willing to testify against them ends up missing or dead. Salinger's allegations of all of that eventually caused him to lose his job with Scotland Yard, although he continues his quest now working as an Interpol agent. He has a friend and believer in New York Assistant District Attorney Eleanor Whitman (NAOMI WATTS), but she's similarly getting heat from above to prove something about the bank and its leader, Jonas Skarssen (ULRICH THOMSEN), or get off the case.
Following the deaths of an undercover agent, his potential witness, and Italian defense contractor CEO turned aspiring politician Umberto Calvini (LUCA GIORGIO BARBARESCHI), Salinger and Eleanor realize their quest has become even more dangerous, especially with Skarssen surrounded by a ruthless inner circle, including Wilhelm Wexler (ARMIN MUELLER-STAHL), who will do whatever it takes to keep the bank operational.
For the latter, that includes the use of an assassin only known as The Consultant (BRIAN F. O'BYRNE). When Salinger gets a lead on him, that results in a trip to New York where he's joined by Eleanor and local cops Iggy Ornelas (FELIX SOLIS) and Bernie Ward (JACK McGEE) who try to track down the killer.
As things become more dangerous and deadly, Salinger does what he can to expose the International for what it really is and bring down the company and everyone associated with it.