A crime film depicting the fall of a man who is entangled in a criminal organization and accustomed to violence and the vicious cycle of violence.

大阪。夏。 10才のアツシ、ケンジ、カナコの悪ガキ３人は、いつもつるんでいた。 ３人とも貧乏でお金もないが、毎日楽しく遊ぶ最高の仲だった。 ケンジは孤児院で暮らす環境だがあまりにも好き勝手にやりすぎて、 孤児院の中に軟禁されてしまう。３人の夏はそこで強制終了してしまう。 25年後。 アツシは無能ヤクザに ケンジは最強・無敵の有能ヤクザになっていた。

Living a troubled home-life, a teenager becomes so stressed out with everything around her that she disappears into a series of fantasy-related books. While trying to escape her situation, she soon finds herself living in feudal Japan with a ninja master and his students who inform her that she's in a separate dimension from her regular life and are to help train together in the way of the ninja. When the training's complete, the girls learn that an evil warlord that left them orphans has intentions on killing them all as well, forcing the girls to team up together with all their training to defeat the madman and live in peace again.