The Unbreakable Mask and the Shattered Bubble

is episode 324 of the Naruto: Shippūden anime.

Summary
As the Naruto Clone disappears, the real Naruto comes face to face with the Madara in the mask and attempts to headbutt the mask. As the masked man readies his reincarnated jinchūriki, Naruto recognises one of the techniques. In a fantasy world, Naruto meets with a reincarnated Utakata, who explains more about what happened after he left the Tsuchigumo Village. After the conversation, the former jinchūriki use various techniques to attack Naruto and Killer B. However, when Naruto mentions that two Madara's exist, the masked man proclaims that he no longer cares about his name and only cares for the completion of the Eye of the Moon Plan