The Terrifying Secret
As Kakashi and the others continue to struggle against the Akatsuki duo, Kakuzu reveals that he has not one, but five hearts! In order to kill him, one must take out all five of his hearts. Meanwhile, Shikamaru decides to challenge Hidan alone, and forces him away from his partner.
Aired 20/11/2008EP 85 - The Terrifying Secret
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)