The Five Kage Summit (五影会談, Gokage Kaidan; Literally meaning "Five Shadow Summit") is a meeting where the Kage from the Five Great Shinobi Countries meet to discuss matters affecting their respective countries and the world at large. The meeting can be convened by any of the Kage, and a location selected for where they will convene. Each Kage are allowed up to two bodyguards to accompany them at this meeting.
The first ever meeting of the five Kage was convened by Hashirama Senju, the First Hokage, to discuss the formation of the hidden villages and to sign a memorandum that would work in favour of the progress and prosperity of their people. Present at this meeting along with Hashirama was A, the First Raikage, Ishikawa, the First Tsuchikage, Byakuren, the First Mizukage, and Reto, the First Kazekage. Accompanying them to the meeting was Tobirama Senju, A (the future Second Raikage), Mū, the future Third Mizukage, and Shamon (the future Second Kazekage).
In an attempt to balance the power between the villages and as a sign of goodwill, Konohagakure intended to distribute the tailed beast which Hashirama had captured. Reto, however, noted that Sunagakure already had a tailed beast within their possession and instead asked for an alternative payment of a portion of the fertile land of the Land of Fire, their closest neighbour, and 30% of the asking price from each of the tailed beasts that the other nations would pay for. Outraged at this to the point of threatening war against Sunagakure, Hashirama was able to quell their rage through honestly speaking of his hopes for the future of the shinobi. Unfortunately, the peace did not last and competition between the villages eventually led to the First Shinobi World War.
Since then, it is unknown how many other meetings were convened though the most recent was convened in response to the threat of Akatsuki: who had been working on capturing the nine tailed beasts or their jinchūriki. At the start of Part II, Akatsuki had captured two tailed beasts and progressively worked their way through capturing the others. When it appeared that the Eight-Tails' jinchūriki Killer B had also been captured, A, the Fourth Raikage, convened the Summit to be held in the neutral Land of Iron. Accompanying A were his bodyguards Darui and C. Also in attendance was Ōnoki, the Third Tsuchikage, with his bodyguards Kurotsuchi and Akatsuchi, Mei Terumī, the Fifth Mizukage, with her bodyguards Ao and Chōjūrō, Gaara, the Fifth Kazekage, with his bodyguards Temari and Kankurō and finally Danzō Shimura, the Candidate Sixth Hokage, and his companions Fū Yamanaka and Torune Aburame.
During the process of selecting a Supreme Commander of the Allied Shinobi Forces, Ao revealed to the five Kage and their respective bodyguards that Danzō was manipulating Mifune, the neutral host of the summit, with the use of Kotoamatsukami. However the Kage would not have ample time to punish Danzō as Akatsuki-affiliated group, Taka, would attack the Summit and fight the Kage. During the commotion Danzō would use this time to escape with his bodyguards. The Summit would culminate in Tobi declaring the start of the Fourth Shinobi World War, the Kage were able to band together and decided to form the Allied Shinobi Forces in order to stop this threat once and for all.
Several years after the Fourth Shinobi World War, another Kage Summit was convened in Konohagakure. In attendance was Naruto Uzumaki, the Seventh Hokage, with his adviser Shikamaru Nara, Gaara, the Fifth Kazekage, with his bodyguard Kankurō, Kurotsuchi, the Fourth Tsuchikage, accompanied by Akatsuchi, Darui, the Fifth Raikage, accompanied by Omoi, and Chōjūrō, the Sixth Mizukage, accompanied by an unknown shinobi. However, it is unknown of what matters were discussed at the summit.