Infiltrator
Naruto returns to the Leaf Village, and his teammates demand to know why he didn't finish Sasuke off when the latter was in such a weak state. Naruto tells them that when the time is right, he will deal with Sasuke personally. Meanwhile, a supposedly deceased member of Akastuki has infiltrated the Hidden Cloud Village.
Aired 23/06/2011EP 217 - Infiltrator
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)