When an American is murdered in a Japanese inn, Tokyo police detective Munesue follows the trail of the killer to New York. There he is joined by a New York City detective named Shuftan and together they sort out the crime.

While trying to search for her missing father, Atsuko Moriya meets a group of outcasts that help her. Having only an encrypted disk in her possession and while being chased by unknown people, Atsuko tries to solve the mystery of her family origins.