The Five Kage's Decision

is episode 222 of the Naruto: Shippūden anime.

Summary
Tsunade talks to a council and informs them about the Fourth Shinobi World War and warns others not to underestimate Akatsuki. In Land of Lightning another council is held about war, as Kisame spies on them from inside Samehada. B, paying no attention, was busy writing raps in his rhyme book. At the same time, when Naruto was just about to start eating at Ramen Ichiraku when he is reversed summoned away to Mount Myōboku without warning. Shizune informs Tsunade about Naruto's disappearance, and Tsunade orders some shinobi to search for him causing an uproar in the village. Three days later the Kage meet again to discuss how they should start pooling their resources. As the first matter of business, Naruto and Killer B are to be given constant protection. Tsunade objects since they would both be invaluable in the war with Akatsuki, but is forced to agree. Tsunade meets with A alone and asks him for a favour to let B teach Naruto how to control Nine-Tails. A says that the place where he is sending B and Naruto isn't just a hideout but a training ground. Tsunade returns to the village and informs Naruto that he's going on an S-rank mission to an island located in the Land of Lightning.

Trivia

 * A poster of Naruto the Movie: Blood Prison was shown on a wall in the entrance hall of Killer B's enka concert.