Harry Potter and the Chamber of Secrets was the second of the seven Harry Potter novels by J. K. Rowling. The following is a summary of the story of Harry Potter and the Chamber of Secrets: The story takes place in the second year of Hogwarts School of Witchcraft and Wizardry. Harry Potter returned to his aunt's house for the summer holidays, but he was abused by his aunt and cousin Dudley. At the end of the summer holidays, Harry was picked up at Wizarding school by Ron Weasley and Harmony Granger. At Hogwarts, Harry found the school plagued by a series of strange things. The students were attacked one after another, and their bodies were petrified. This caused the atmosphere in the school to be tense, and the students were extremely afraid. Harry, Ron, and Harmonie began to investigate the cause of these events, and discovered that they were all connected to a legend called the Chamber of Secrets. According to legend, there is a locked chamber in Hogwarts that can only be opened by a descendant of the Potter family. A terrifying giant snake was sealed in the secret chamber. Only it could cause attacks and petrification. Harry suspected that the Chamber of Secrets had been reopened, and his friends were beginning to believe him. Harry found the entrance to the Chamber of Secrets in one of the bathroom walls, accessed through a snake-shaped sink. He entered the Chamber of Secrets with Ron and Harmonie and tracked them to the serpent's lair. They met a ghost named Tom Riddle, who had been a student at Hogwarts and had become a clone of the Dark Wizard Voldemort. Riddle tried to use Harry's blood to resurrect Voldemort, but Harry succeeded in defeating him. Harry rescued Ron's sister, Ginny Weasley, who had been attacked by a giant snake, and escaped the Chamber of Secrets with her. They returned to the school and told Professor McGonagall and the other teachers what had happened. Hogwarts was quiet again, and Harry and his friends were honored. Harry Potter and the Chamber of Secrets is a story about courage, friendship, and fighting against the power of evil. It shows the determination and wisdom of Harry and his friends in the face of difficulties. This novel further expanded the mystery and danger of the magical world, laying the foundation for the subsequent stories of the entire series.