In Harry Potter and the Chamber of Secrets, Harry returns to Hogwarts, where a dark force petrifies students. He learns about the legend of the Chamber of Secrets, a hidden room within the school created by Salazar Slytherin. With Ron and Hermione, Harry uncovers Tom Riddle's diary, battles a giant basilisk, and destroys the diary to save Ginny Weasley, ending the terror caused by the heir of Slytherin.