Even an undefeated ninja cannot survive in the Hell's Paradise! Gabimaru the Hollow is one of the fiercest assassins to emerge from the Iwagakure ninja village. He is ruthlessly efficient, but a betrayal leads to a life-threatening decision. He has only one hope to earn his freedom: he must travel to a well-hidden island and retrieve an elixir that will make the shogun immortal. Failure is not an option. On this island, paradise and hell are just a hair's breadth apart.