The Hunt
Kakashi splits the two teams into five separate groups, each aided by a couple of his ninja dogs, in order to locate clues about Itachi and Sasuke's whereabouts. Unbeknownst to everyone, familiar foes have set their eyes upon both Naruto's group and Sasuke.
Aired 13/08/2009EP 122 - The Hunt

Naruto: Shippuden
Naruto: Shippuuden is the continuation of the original animated TV series Naruto. The story revolves around an older and slightly more matured Uzumaki Naruto and his quest to save his friend Uchiha Sasuke from the grips of the snake-like Shinobi, Orochimaru. After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work, though it will not be easy, as he has amassed a few (more dangerous) enemies, in the likes of the shinobi organization; Akatsuki.
(Source: Anime News Network)