In a concealed village, a young man hides within a bunch of leaves. His name is Uzumaki Naruto, a mischievous boy attending Ninja Academy.

Everyday, he does nothing but cause mischief and making Iruka-sensei mad. And above all, it's doubtful that he'll be able to graduate from the Academy. But Naruto has a dream... A dream that he'll become the head of the Ninja village, following Hokage and will become the best ninja around.

However, all the adults in the village give Naruto cold looks. The truth is, Naruto has a secret about his birth. 12 years ago, "Kyuubi no Youko" (Nine Tailed Fox - A kind of evil spirit who tormented the village, was sealed within Naruto's body who was, at the time, a baby. The head of the academy, Mizuki, uses Naruto to steal the "Fuujin Scrolls" and makes Naruto understand his past. Naruto is outraged.

Even with Iruka's help, Naruto just barely defeats Mizuki. Knowing Naruto's secret, Iruka knows Naruto will meet someone who'll help him and so, makes a decision. Naruto is allowed to graduate safely from Ninja Academy. Along with his classmates, Uchiwa Sasuke and Haruno Sakura together, they make their first step as Ninjas!

-from crunchyroll

Naruto: Shippūden (ナルト 疾風伝, Naruto: Shippūden? lit. Naruto: Hurricane Chronicles) is the ongoing sequel to the original Naruto anime and covers the Naruto manga from volume twenty-eight on. After training for two and a half years with Jiraiya, Naruto returns to Konohagakure, reunites with the friends he left behind, and reforms Team 7, now called Team Kakashi, with Sai replacing Sasuke. All of Naruto's classmates have matured and improved in the ranks, some more than others. Unlike the original series where they only played a minor role, the Akatsuki organization takes on the main antagonistic role in their attempts at world domination.

-from Wikipedia