Deprived of Eternal Sleep (奪われた永眠り, Ubawareta Nemuri) is episode 57 of the Naruto: Shippūden anime.
Naruto, Sakura, Sai and Yamato head out for a new mission near the Fire Temple. When the other party fails to show up at the rendezvous point, the team gets separated and Naruto stumbles upon one of the four hidden tombs they came to protect. Due to a misunderstanding, he fights one of the monks-in-training from the Fire Temple, Sora, who also uses wind chakra based techniques. After the confusion, the monks and Team Kakashi travel to the Fire Temple, and Naruto recognises it from his nightmare.