Naruto Episode 12
In the woods, Naruto encounters Haku. The two discuss their dreams, and Haku comments that one’s strength is at its greatest when protecting a loved one. Sasuke and Naruto soon master tree-climbing, but Inari deems their training as pointless, enraging Naruto. The two engage in a heated dispute, which Kakashi resolves when he comforts Inari, revealing that Naruto wanted him to regain his hope and courage. The next morning, Kakashi, Sasuke, and Sakura escort Tazuna to work. Upon arriving at the bridge, they find Tazuna’s workers unconscious and the air getting thicker with mist. Zabuza and a masked Haku reveal themselves.
Source: Wikipedia
Naruto Episode 12 – Battle on the Bridge! Zabuza Returns!
