Kinect Mickey's Disneyland Adventures is a game inspire by Kingdom Hearts.
Kinect Mickey's Disneyland Adventures begins with Mickey's Dive to the Heart, which foreshadows the events that will soon take place, but soon progresses to Toontown, where Mickey lives with his two best friends, Donald Duck and Minnie Mouse. The three friends seek to leave their home to explore new worlds and have prepared a raft for this purpose. One night, the islands are attacked by darkness and shadow creatures. Mickey seeks out his friends, finding Donald Duck first; Donald disappears into darkness, curious about what it contains. Soon after, Mickey obtains a mysterious weapon, the Toy Kingdom Sword, to defend himself. Using it to fend off the creatures, he heads for a secret cave, where he finds Minnie near a door. She turns to him, saying his name as the door behind her blows open. The ensuing blast of darkness sends Mickey and Minnie both out of the cave. The town was soon destroyed, and Mickey is left adrift, Donald and Minnie's whereabouts unknown.
Meanwhile, Sora has left his world to deal with the increasing power of darkness and left instructions for mage Tidus and knight Riku to find the "toy sword". Tidus and Riku use a Gummi Ship to travel to Traverse Town, where it happens Mickey has also drifted to. Mickey encounters the creatures again in the town, and eventually meets Leon, a mysterious swordsman who explains they are Heartless, creatures that consume hearts, and that the toy sword is the only weapon capable of defeating them. The king of Leon's home world, a man named Judge Doom (real name; Judge Sunshine), is said to have studied the Heartless. Tidus and Riku are approached by Leon's ally Aerith, who also tells them what they may be looking for. Soon after, Mickey meets Tidus and Riku rather hastily, and the three work together to take down a large Heartless. From there, they decide to travel together: Tidus and Riku to find Sora, and Mickey to find Minnie and Donald.
The three travel to various world attractions in Disneyland based on Disney films, finding that the Toy Sword also locks "Keyholes", passages that the Heartless use to take the hearts of the worlds. A group of villains, led by Maleficent, seek out the seven Princesses of Heart to unlock the Keyhole that leads to Kingdom Hearts, a repository of knowledge and power and the source of all hearts. This group now includes Donald, who is swayed by Maleficent's promises that she will help find Minnie. At the same time, Maleficent breeds distrust in Donald, telling him that Mickey has abandoned him and Minnie for new friends and the toy sword. An increasingly antagonistic Donald manages to find Minnie's body, but her heart is missing.
Mickey and his friends eventually arrive at Hollow Bastion, the home world of Judge Doom and the headquarters of Maleficent. Donald takes the Toy Sword from Mickey, claiming that he was fated to have it all along and Mickey was simply the "delivery boy". Tidus and Riku, taking their order to follow the "toy sword" seriously, reluctantly leave with Donald. Mickey calls on his courage and enters the Bastion anyway, then challenges Donald again, stating that his heart derives strength from his friends. His friends return to him, as does the Toy Sword. Shamed, Donald flees and meets a cloaked man who goads him to give into the darkness.
Mickey, Tidus, and Riku, meanwhile, engage and destroy Maleficent. They soon after meet a strangely-behaving Riku with a new Keyblade that unlocks hearts. He leads them to Minnie's living but unfeeling body; Donald then reveals himself as completely possessed by Judge Doom. The newly reformed Judge Doom explains that Minnie is the last Princess of Heart, and that her missing heart has been trapped within Mickey's body since the destruction of Toontown. Spurred to action, Mickey defeats Judge Doom; however, he cannot seal Hollow Bastion's keyhole because Minnie's heart is still in his body, thus the keyhole remains incomplete. Mickey uses Judge Doom's Dip Gun to unlock his heart, releasing both his and Minnie's heart, but turning him into a Heartless. Minnie's heart returns to her body, in turn completing the final Keyhole; she then returns Mickey to human form by the strength of her heart. The group resolves to follow and end Judge Doom's plan.
Judge Doom retreats to the End of the World, the combined fragments of worlds taken by the Heartless. Upon being found and finally beaten, he explains his belief that darkness is the heart's true essence, and he seeks Kingdom Hearts, the source of all hearts, and therefore the ultimate source of darkness. However, upon opening the door to Kingdom Hearts, it reveals Light, killing Judge Doom. Beyond the door are Sora and Donald, back in control of his own body. They help Mickey and the others close the door, as there are many Heartless beyond it, but Donald and Sora must remain inside to help seal it. Sora and Mickey then use their Toy Swords to lock the door. The destroyed worlds reconstruct themselves; Minnie is pulled back to Toontown, but Mickey promises before separating they will all reunite some day. Mickey, Tidus, and Riku resolve to find Donald and Sora, though they are unsure of where to start. Luckily, Sora's Dog appears, clutching a letter from Sora in his mouth; he runs off with Mickey, Tidus, and Riku in tow, ready for a new set of adventures. The silent narrator from the beginning of the game states in the final scene that Mickey's destiny is to open the door to light.