After being possessed by the ghost of vengeful hitman Kudo, college student Fumika Matsuoka agrees to help him finish his quest for revenge from beyond the grave.

An assassin for a secret organization keeping Japan safe from underworld threats finds himself targeted by evil forces aiming to unleash an unstoppable criminal syndicate upon Japan.

In an unknown place and unknown time, a lone Samurai known only as Grave thirsts for the ultimate battle.

Toramaru, lord of integrated martial arts Mugen-ga-ryu, ends his training journey and visits his master, Gensai. "You have to duel with every martial arts master and win, in order to obtain their esoteric books of martial secrets." Receiving such an order from Gensai, Toramaru makes a pilgrimage around Japan and spends a year fighting. Through his fights with genuine masters in every martial arts such as kung-fu, stick fighting, sword fighting, and nunchaku, this film passionately tells what "Budo" is and what Bushido is. Full of fierce and diverse action! The original fighting movie is finally born here!