Lee Lan, a member of the PetroChina Oil Project, was killed in Shanghai. In the shadow is a dark triangle of House of Representatives member Yamada and his secretary, Nojima, and Vice President of Japan-China Oil Company, Miki Lee Ran was raped and killed by a paraphilia Yamada, and the incident was buried in the darkness. In order to "clean up" this incident, Anna, a member of the "Dark Angel", is ordered, but an unexpected new target appears while performing the mission.

What kind of truths lie hidden in mysterious dreams and psychic phenomena? Keiji Kamiyama, a counseling psychologist and Aoi Ueno, a college student investigate the truths of this invisible world.

As sadomasochistic yakuza enforcer Kakihara searches for his missing boss he comes across Ichi, a repressed and psychotic killer who may be able to inflict levels of pain that Kakihara has only dreamed of.

Yoriko, a lonely housewife, spies on her neighbors through a hole in the wall of her kitchen.