Kingdom Hearts II
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Actually the third game released, Kingdom Hearts II picks up with the story of Roxas, a teenaged boy in Twilight Town who is plagued at night by memories of another boy named Sora. As his summer vacation winds to a close, he encounters a man named Axel and a girl named Naminé, both of whom imply that not all is as it seems in Twilight Town. Eventually, Roxas discovers the truth; that he is the "Nobody" of Sora, a wielder of the Keyblade, and once, the last Nobody of Organization XIII. Roxas rejoins with Sora, opening the way for the Keyblade Master to wake from his year long sleep.
Sora, Donald, and Goofy awake in Twilight Town with no memory after the defeat of "Ansem." True to form, Sora immediately begins to search for Riku again; however, he now finds his progress impaired by the remaining members of Organization XIII. Exploring new worlds, and a few new parts of old ones, Sora finds that the Heartless still await him at every turn.
Sora and co. eventually find one of the people they had been questing for; or rather, King Mickey finds them. He tells them the truth of their encounter with "Ansem;" the man they defeated was not in fact Ansem at all, but the Heartless of his apprentice, Xehanort. The Nobody of this man, Xemnas, is the leader of Organization XIII. At about this time, Sora discovers that Kairi has been kidnapped by a man named Axel; a traitor to the Organization, and the best friend of Roxas. However, Kairi is soon stolen from Axel by Saïx, another member of the Organization. Sora decides to defeat the Organization, both to stop their actions of spreading Heartless throughout the worlds, and to rescue Kairi (and maybe Riku, too).
Sora returns to Twilight Town, and with the help of some local residents, enters the virtual town that kept Roxas as a prisoner during his last seven days of existence. There, he enters a space between worlds and discovers Axel, fighting against a large number of lesser Nobodies. Axel sacrifices himself to defend Sora, then opens a pathway to the World That Never Was, where the rest of the Organization resides.
Axel's death reawakens Roxas within Sora. Before Sora arrives at the Organization's Castle, he appears to be met by a boy his own age in an Organization cloak, wielding a pair of Keyblades. However, Donald and Goofy see nothing of the pair's battle. Afterward, the boy says that Sora is "a good Other" before disappearing. Roxas and Axel also have an exclusive farewell scene during this scene in Kingdom Hearts II: Final Mix.
Meanwhile, Kairi sits in her cell in the Organization's Castle, when a portal opens revealing Naminé. Kairi escapes with her Nobody, not even realizing what the girl is until later. This also opens a path for Sora and those with him (Donald, Goofy, and the King) to enter the Castle That Never Was. Saïx attempts to recapture Kairi, however, he is stopped by a man in the Organization's coat, a man Naminé calls "Riku" before disappearing. Kairi approaches Riku and removes his hood, startled to see the face of Xehanort's Heartless in place of her dear friend. Mickey runs ahead of the group, and runs into DiZ in the upper floors. Mickey recognizes his old acquaintance, the real Ansem the Wise.
Sora battles the Heartless summoned by Saïx, until another member of the Organization, Xigbar, destroys them and attacks Sora himself. Sora defeats Xigbar, who leaves behind cryptic hints about past wielders of the Keyblade. A now thoroughly confused Sora heads upwards to meet Kairi. Riku, still wearing the face of Xehanort, attempts to leave, but Kairi stops him, and shows Sora who he truly is. Sora falls to his knees in relief, in a scene fangirls for all of time shall never forget.
The group presses onward, defeating Luxord and Saïx. They arrive in time to see Ansem the Wise and Mickey talking with Xemnas, who taunts his former master in front of the moon of Kingdom Hearts. Ansem apologizes for everything he's done, and causes the machine he was using to digitize Kingdom Hearts to blow up. Xemnas leaves, and the power of the explosion causes Riku to assume his own form again.
The group then heads off to the final confrontation with Xemnas, who absorbs the remaining power in the Kingdom Hearts moon. After the first battle, the group thinks him defeated. Roxas and Naminé speak to Sora and Kairi, who promise to be together every day, so that their Nobodies can be, too. Naminé then opens a portal, and the majority of the group leaves. However, Sora and Riku are left behind to face Xemnas yet again. After defeating his armored form, Sora and Riku face down the Nobody of Xehanort one last time in a swirling space of black and white. Riku is wounded in the battle, and the two limp towards the dark shore together. There, Sora finds a letter from Kairi in a bottle, which opens a "Door to Light" leading the boys back to the Islands at last.
After the credits, the Island trio are shown together, reading a letter from the King. What contents this letter may have are still unknown. There are also another pair of unlockable trailers, both of which relate to the prequel game Birth By Sleep.
