Louise is sent to Japan by a French bishop. His nephew seems to be in trouble, and the Monseigneur wants to keep his reputation above suspicion. In fact, his nephew, Florent, is involved in mysterious relationships with a depressive politician, a charismatic Yakuza - Boss Gonzo -, and an old woman who deals in stolen artworks. Louise is slowly beginning to understand the situation, when her translator, Miss Eve, is found badly murdered.