Naruto and his team return to the Village Hidden in the Leaves after their battle in Land of Waves.

Rock Lee challenges Sasuke to a one-on-one fight. Naruto grows angry and attacks him, only to be beaten in one attack. Sasuke realizes the challenge and eagerly accepts. But will Sasuke be defeated just as easily by this mysterious ninja? Sasuke's only advantage seems to be his Sharingan, but what happens when not even that will work?

The second exam is about to begin, and every ninja must sign a form so that their team can get either the Heaven or Earth Scroll. The goal is to get one of each scroll and make it to the tower in five days. The groups get their scrolls and the exam begins. Naruto is ambushed by a ninja who poses as him. This ninja doesn't fool Sasuke, who immediately figures it out. Meanwhile, a new foe seeks them out, but who is this foe?

Kiba, Shino, and Hinata decide to try and eliminate their opponents by taking more scrolls. They arrive upon a battlefield where three Rain ninjas are battling Gaara, Kankuro, and Temari. They remain hidden and observe the battle, thinking one of the Rain ninjas is a dangerous foe. After realizing Gaara's amazing abilities, they discover who is the really the dangerous one, and will be lucky if they can sneak away with their lives!

Kankuro takes on Kabuto's teammate, Misumi, in a quick battle, proving how tough the Sand ninja really are. However, the real match comes when Sakura and Ino are pitted against one another!

The match between Gaara and Lee draws to an end as Lee unleashes his ultimate move. But will even this be enough to defeat Gaara? Even if Lee does make it out in one piece, even more shocking news awaits him.

Waking up late, Naruto hurries to the stadium where the Chuunin matches will be held, along the way he stops at his old training ground and meets up with Hinata. Naruto tells Hinata that he's afraid he'll lose, but with Hinata's encouragement and sort-of-confession of her feelings, Naruto is filled with renewed confidence and proceeds to the stadium leaving a shellshocked Hinata in his wake. Now Naruto must try to make it the stadium before it's too late, and Konohamaru has a plan to help him out.

With Gaara's ultimate defense in place, Sasuke's only hope of winning lies within the move Kakashi taught him...Chidori. But, how will Gaara react when Sasuke causes him to bleed?

Sasuke struggles to keep up with Gaara's monstrous capacity. Only able to use Chidori twice in normal circumstances, Sasuke remembers that tragic day when his family died and realises he must risk the use of Chidori beyond his limit if he is to defeat Gaara. That is, if he can...

Jiraiya and Naruto begin their search for Tsunade, but are constantly sidetracked by Jiraiya's peeping and hitting on pretty girls. Jiraiya tells Naruto some stories about the 3rd and 4th Hokages. Meanwhile, Sasuke learns that his brother, Itachi, is after Naruto and goes to warn him.

Naruto makes a bet with Tsunade, that if he can master the Rasengan in one week, she'll give him a necklace belonging the to the First Hokage. However, Shizune reveals some startling information. Everybody, except for Tsunade, who's worn that necklace has died the next day!

Konohamaru locks himself in the office used by the 3rd to stop them from replacing his grandfather, the previous Hokage. Tsunade spends the day locked out of her office and researches a way to heal Rock Lee so he has a better chance of surviving the operation,

As Gai and Lee leave Konoha on a mission, two strangers disguise themselves as them and sneak into the village to learn its secrets. Tsunade, Sakura and Tenten have big plans in store for these imposters, plans that'll make their lives miserable.