the story features the first half of the series as well as a new story arc that takes place between the Search for Tsunade and the Sasuke Recovery Mission. In this arc, Orochimaru has Kabuto use a technique called the Forbidden Technique: Ged? Seal to seal Kakashi's Sharingan. Orochimaru then starts his second invasion on Konoha and uses Summoning: Impure World Reincarnation to revive Zabuza Momochi, Haku, and the Third Hokage. (Narutopedia)