Reinforcements Arrive
White Zetsu’s ability to mimic people’s appearances has wrought confusion and distrust within the Allied Shinobi Forces. Naruto arrives to assist, and using his sensory powers, he identifies all the disguised White Zetsu clones, changing the tide of the battle.
Aired 18/07/2013EP 321 - Reinforcements Arrive
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)