A rare book dealer finds himself at the heart of a string of paranormal events when he is hired to find the last two copies of a text, The Nine Gates of the Kingdom of Shadows, capable of summoning the Devil.
A briefcase with undisclosed contents – sought by Irish terrorists and the Russian mob – makes its way into criminals' hands. An Irish liaison assembles a squad of mercenaries, or 'ronin', and gives them the thorny task of recovering the case.
The film begins with a flashback from the titular character, Antoine. We are introduced to his fixation with female hairdressers which began at a young age. The film uses flashbacks throughout and there are frequent parallels drawn with the past. We are unsure what Antoine has done with his life, however, we know he has fulfilled his childhood ambition, to marry a hairdresser.
