It's a really convoluted shit of a movie; just pass.
A murder-mystery set around the intricacies of Japanese business culture.
A very good movie with a great theme and tone throughout.
TODO - Watch the special features, there's a lot.
A cop's early investigation into a police fund theft has him killed, leaving his framed hostage-negotiator partner to use the only tool he has available to find the real killer.
A really great movie with a unique topic. Recommended.