A man arrives in the city upon news of a potential terrorist strike in Italy. He is Japanese foreign diplomat, Kosaku Kuroda, and he’s here under orders of his supervisor at the Foreign Ministry, Hiroshi Kataoka (Kiichi Nakai), to aid in the safeguarding of Japanese citizens. Kuroda’s main contacts at the Japanese embassy consist of Ambassador Kikuhara, Counselor Nishino, and fellow diplomatic envoys Haba and Tanimoto. All are busy preparing for the visit of Japanese Foreign Minister Kawagoe due to arrive for the high-profile G8 foreign minister’s meeting. Meanwhile, somewhere on the festively-lit streets of the city, a young Japanese girl has suddenly gone missing. Is it an abduction simply for ransom? Or could it be a prelude to terror?

Masaharu Fukuyama reprises his role from 2008's "Suspect X," playing the physicist-cum-detective Manabu Yukawa. The scientist-sleuth arrives in an oceanside town to speak on a panel. But when a man turns up dead outside the inn where he's staying, Yukawa begins to unravel the connections that tie the victim to the activist daughter of the innkeepers, and a precocious boy who first appears on a train—and keeps popping up. It's a Sherlock Holmes mystery with an environmental twist, and one that should please fans of a classic whodunnit.