Fact1: dust speck floats past him in air, Fact2: entire society of microscopic creatures are living on speck, Fact3: Horton gives chase to it before placing it on top of clover, Fact4: JoJo Despite being oldest and next line for does n't want to be next mayor never talks mayoral position, Fact5: Kangaroo enlists vulture named Vlad Vladikoff to get rid of speck by force
Output: A dust speck is dislodged from its obscure place and sent adrift through the Jungle of Nool. At the same time, Horton the elephant, the jungles eccentric nature teacher, takes a dip in the pool. The dust speck floats past him in the air, and he hears a tiny yelp coming from it. Believing that an entire society of microscopic creatures are living on that speck, he gives chase to it before placing it on top of a clover. Horton finds out the speck harbors the city of Whoville and its inhabitants, the Whos, led by Mayor Ned McDodd. He has a wife, Sally, 96 daughters whose names all begin with the letter H, and one teenage son named JoJo. Despite being the oldest and next in line for the mayoral position, JoJo doesnt want to be the next mayor, and because hes so scared of disappointing his father, never talks. Once Horton begins carrying the speck with him, the city starts experiencing strange phenomena earthquakes and changes in the weather, and the Mayor finds his attempts to caution Whoville challenged by the Town Council, led by the opportunistic yet condescending Chairman. After he makes contact with Horton, the Mayor finds out from Dr. Mary Lou LaRue that Whoville will be destroyed if Horton does not find a safer, more stable home. Horton resolves with the help of his best friend Morton the mouse to place the speck atop Mt. Nool, the safest place in the jungle. The head of the jungle, Jane Kangaroo, disbelieving Hortons beliefs and resenting him for overshadowing her authority, attempts several times to demand that Horton give up the speck, but Horton ignores her demands. Also taking force toward Horton are the Wickersham Brothers, a group of monkeys who love making misery. Eventually, the Kangaroo enlists a vulture named Vlad Vladikoff to get rid of the speck by force. After a few failed attempts, Vlad manages to steal the clover away from Horton and drops it into a massive field of identical pink clovers, causing an apocalyptic tremor in Whoville. After unsuccessfully picking nearly three million clovers, Horton eventually recovers the clover exactly the 3,000,000th clover. The Kangaroo eventually finds out, thanks to Mrs. Quilligan, that Horton still has the speck, and decides to rally the jungle community into fighting Horton, saying that Hortons goal will lead to anarchy. Upon cornering him, the Kangaroo offers Horton an escape from punishment by renouncing Whovilles existence. Despite Hortons heartfelt speech when he refuses, the Kangaroo orders the animals to rope and cage him, and to have the speck and the Whos destroyed in a pot of boiling beezlenut oil. The Mayor enlists all of his people to make noise by shouting We are here!, as well as playing a variety of instruments, so the animals may hear them, assisted by JoJos Symphonophone, an invention which creates a huge musical contribution which reveals that JoJos true passion is music, but still fails to penetrate the surface of the speck. As Horton lies beaten and captured, the Kangaroo easily takes the clover, and drops it. Meanwhile, JoJo grabs the horn used to project Hortons voice, runs up the highest tower and screams YOPP!, breaking through the sound barrier just seconds before the speck hits the oil. The Kangaroos son, Rudy grabs the clover and returns it to Horton. The animals finally hear the Whos, realizing the truth about the clover, and isolate the Kangaroo for tricking them. While being praised for his integrity by his neighbors, Horton even forgives the devastated Kangaroo, and she befriends him with a makeshift umbrella for Whoville. Here, the people of Whoville and the animals of Nool gather in song and recite the chorus from Cant Fight This Feeling. The film ends with the narrator revealing that the Jungle of Nool, or rather Earth, is just one speck, like Whoville, among numerous others, floating in outer space.