"Arrival at the Main Battlefield!!" (主戦場到着!!, Shusenjō Tōchaku!!) is chapter 553 of the original Naruto manga.
Summary
Naruto's initial attack on Mū fails. Naruto and Gaara work together enabling Naruto to land a hit on Mū. Onoki increases the weight of Mū's body stopping him from moving which allows Gaara to seal him. Gaara wants an explanation as to why Naruto is on the battle field. Shikaku Nara informs them of the situation. Temari's squad has a hard time dealing with the Third Raikage. Dodai explains the Third's abilities, and past. Kabuto erases the Third's personality in order to stall for time. Naruto arrives at Temari's location and begins attacking the Third. At the Akatsuki base, Sasuke seemingly attacks and kills White Zetsu with his new Susanoo. He reveals his eternal Mangekyo Sharingan and states that his new eyes can see well in the darkness.