At 3 different locations in Japan, a male stranger appear. People there suspect that the stranger might be the murderer.
At a fishing harbor in Chiba, Yohei Maki (Ken Watanabe) works at the harbor and he has a daughter, Aiko (Aoi Miyazaki). Aiko begins to date Tetsuya Tashiro (Kenichi Matsuyama). Yohei begins to suspect that his daughter's boyfriend might be the killer, because he is using a fake name.