In Harry's second year, something weird is happening at Hogwarts. No, not weird, scary. First Mrs. Norris gets petrified, hanging by her tail on a lantern by a threat for Mud-Bloods on the wall of the girls' bathroom. Then all of the roosters are getting killed. Who--or what-- is doing this? Then one of Harry's admirers gets petrified with a camera. Next a boy in Hufflepuff and a ghost are down. Who will be next? Everyone thinks that Harry's doing everything, and it's all because he can speak to snakes. Then Hermione and Percy's girlfriend join them. But something awful happens and it's up to Harry and Ron to save the day with a little help from Hermione on the way.