Raging Tailed Beast
Yūkimaru summons the Three-Tailed and immobilizes it while Guren tries to capture it. It manages to break free and attack. Kakashi tells Naruto to investigate the lake, while they find Rinji and the others. Rinji and his men prepare an ambush, but Hinata, Sakura, and Sai arrive to avert it. Naruto summons Gamakichi and Gamatatsu and approach the Three-Tails, where they see Yūkimaru and learn of his allegiance to Guren. Trying to save Guren, Yūkimaru tries to suppress the Three-Tails once more, before managing to escape with her.
Aired 05/03/2009EP 99 - Raging Tailed Beast
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)