Harry gets a warning from a house elf that says if harry goes back to Hogwarts, terrible things will happen. But Harry must go. The year begins with a new defense against the dark teacher and sometimes water starts flooding from a bathroom. but after a while, the warning starts to get true, writing appears on a wall, kids get attacked and Ron's sister disappears while the mysterious chamber of secrets opens. and Harry is Hogwarts only hope to fix this.