Due to misunderstanding and hard life, a man divorces his wife and leaves the city. He comes to a new environment, meeting new people and new wife. Crucified between two worlds, he does everything to bring her two sons on the right track, and getting on with his own life. Lost in that space, powerless to change things significantly, he commits murder.

Izo is an assassin in the service of a Tosa lord and Imperial supporter. After killing dozens of the Shogun's men, Izo is captured and crucified. Instead of being extinguished, his rage propels him through the space-time continuum to present-day Tokyo. Here Izo transforms himself into a new, improved killing machine.