It is three weeks since Naruto began training under Jiraiya. And Naruto has been on the brink of collapse many times.
Thinking of Haku, Naruto angrily confronts Zabuza. Zabuza is devastated by the loss of Haku, the only person he could trust in the world.
Naruto is finally able to draw out the Nine-Tail Chakra and utilize the "Summoning Jutsu." Gamabunta appears and does not believe that Naruto summoned him.