Simulation
Naruto is paired with Sai for the Buddy team of two, over his and Sakura's objections, while Sakura is assigned to support Yamato. Yamato conducts a simulation of the spy meeting with himself as the spy to gauge Naruto and Sai's abilities and teamwork. After Naruto makes a mistake when attacking Yamato, Sai immobilizes him and goes on to capture Yamato alone. Naruto is angry with Sai for not acting as a comrade would, but resolves to work together with him if doing so will help bring Sasuke back. Sai reveals to Sakura that he has no emotions, and little understanding of them. The group then prepares to head to the bridge.
Aired 06/12/2007EP 38 - Simulation
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)