The Birth of Pain
Nagato reveals the truth about what happened to Yahiko and what made him disregard Jiraiya's ideals. With his story done, he demands to hear Naruto's answers. Will Naruto's answer be enough to convince Nagato to stop his evil plans, or will Naruto be forced to kill Nagato?
Aired 12/08/2010EP 173 - The Birth of Pain
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)