In a frantic chase unsanctioned by both his chief and by Japanese authorities, San Francisco homicide detective Trane Ravenwood hunts the streets of Tokyo for a unstoppable killer whose wake of terror has cut across three continents and is now entering Japan. As Ravenwood desperately tries to stop the next kill before it happens, he and a young Tokyo woman find themselves pulled deeper and deeper into a deadly game mysterioiusly rooted in an ancient past.