This is the story of a vagrant samurai – the solitary, savage and scrupulous Kiba – who arrives at a village to defend a beautiful, blind woman against a sinister plot. Her assailants then send against him another samurai, named Sana, who is without scruples. The fight between them will become personal, for the honor and love of the blind woman.
As the Shogun lays dying, seventeen Iga clan ninja are sent to infiltrate the impenetrable fortress where his youngest son is preparing to storm Edo Castle and name himself Shogun by force of arms. They are to either steal the documents that will eventually give him lawful claim to rulership, or they are to assassinate him. But even before they reach the castle walls, they find their every move countered by a ruthless ninja hunter in the employ of the would-be usurper (Konoe), who not only knows their every tactic but knows the exact make-up of their team thanks to his own spies within Edo Castle. As the Iga Ninja fall one by one, the mission's success or complete failure--where failure will result in a bloody war of succession--comes to hinge on a single young and inexperienced ninja (Kotaro).
Kiba Okaminosuke finds himself entangled with a group of prisoners being transported to their executions, one of whom oddly looks exactly like his dead father. There are crooked gold miners, a beautiful girl who is unfortunately a complete lunatic and a dojo master who is obsessed with killing Kiba just to prove that his school's sword style is the best.
