by Masashi Kishimoto

Naruto and his ninja friends try to protect old Mr. Tazuna and battle Zabuza, the Demon of the Mist. Their teacher Kakashi has shown them amazing powers. But how much does Naruto really know about Kakashi-sensei? What is Zabuza's secret plan? The young ninja find out they know less than they thought about the hidden past of the ninja world!