Invasion of Konohagakure

Takes place during the Chunin Exams.Planned by Oroichimaru. We see the first and Second Hokages for the first time. Gamakichi and Pakkun are introduced as well as Shukaku. Has the battle between Gaara and Naruto. Sarotobi dies sealing Orochimaru's arms. We see Kiba's mom and sister for the first time too.Orochimaru escapes. Sound Four(except Kimimaro) are introduced.