"Power of the Five Kage" (五影の実力, Gokage no Chikara) is episode 204 of the Naruto: Shippūden anime.
At the decimated Valley of Clouds and Lightning, Killer B emerges from the watery depths and tells the Eight-Tails about his plan to learn enka from Sabu, leader of the enka ninja. The Eight-Tails asks why Killer B brought forth his power when he could already had the upper hand, while Killer B merely remarks that Sasuke of the Sharingan is one of the toughest foes he's ever fought. Meanwhile, Kakashi asks Naruto and Yamato not to reveal the truth about Itachi to anyone in the event that it was nothing but a lie.
Back at the Five Kage Summit, Sasuke destroys the pillars, causing the roof to collapse. Using his Susanoo, he saves himself and Karin, whom he only spared so that she could lead him to Danzō. Gaara shields himself, his siblings and Darui while the Fourth Raikage uses his massive strength to punch his way out of the rubble. Suigetsu and Jūgo survive as well, with the latter using his Cellular Regeneration Absorption to escape from the brink of death. Karin leads Sasuke to the conference room, where Sasuke is engaged in combat with Mifune. During the struggle, Danzō, Fū and Torune escape.
The Fifth Mizukage uses her Lava Release: Melting Apparition Technique and repels Sasuke along with his Susanoo out of the room. She reveals that she possesses two kekkei genkai — Lava Release and Boil Release. Using her Boil Release: Skilled Mist Technique to create corrosive acid, she dissolves the chakra surrounding Sasuke's Susanoo and prepares to kill him, as the latter does not have any chakra left to defend himself. However, she is suddenly restrained by White Zetsu's Spore Technique. Using the spores, White Zetsu absorbs some chakra from the Fifth Mizukage, the Third Tsuchikage, Chōjūrō and Akatsuchi, passing them on to Sasuke. As Sasuke storms into the kage conference room, he is trapped by the Tsuchikage's Dust Release: Detachment of the Primitive World Technique, which seemingly incinerates him into mere particles. The Tsuchikage smirks and tells Karin that she is next while the Raikage, who had just stormed into the room, berates him for stealing his kill. At that moment, Tobi warps into the room carrying the unconscious Sasuke, announcing himself as Madara Uchiha and asks them if they would like to hear about his Eye of the Moon Plan.