Hayato Kazami met his best friend Tsurumaru and the genius girl Rio at the Ninja Academy. The three formed a team with a common goal and worked hard to grow into outstanding ninjas. Instructor Fei Zhu trains everyone in a unique way, which creates fun and friction among the team. During the journey, the three of them met the cold-faced assassin Lusuke, and gradually uncovered the undercurrent of power in the ninja world and the dark conspiracy of Yagyu Kyuzo. As a catastrophe swept the entire ninja world, the protagonist team broke through themselves in humorous, tense and ups and downs adventures, and finally jointly shattered the dream of the revival of the dark ninja group and protected the peace and faith of the ninja world.