Forced to spend his summer holidays with his muggle relations, Harry Potter gets a real shock when he gets a surprise visitor: Dobby the house-elf, who warns Harry Potter against returning to Hogwarts, for terrible things are going to happen. Harry decides to ignore Dobby's warning and continues with his pre-arranged schedule. But at Hogwarts, strange and terrible things are indeed happening: Harry is suddenly hearing mysterious voices from inside the walls, muggle-born students are being attacked, and a message scrawled on the wall in blood puts everyone on his/her guard - "The Chamber Of Secrets Has Been Opened. Enemies Of The Heir, Beware"
It's Year 2 at Hogwarts, and Harry Potter, Ron and Hermione are back learning, but their year doesn't go past quietly. Members of the school are turning up petrified and bloody writing are appearing on the walls, revealing to everyone, that someone has opened the chamber of secrets. The attacks continue, bringing the possibility of the closure of Hogwarts. Harry and his friends are now forced to secretly uncover the truth about the chamber before the school closes or any lives are taken.
right at the end, harry goes into this toilet where this ghost had died and descends into a hidden chamber built by Salazar Slytherin. Once there, he sees a younger version of Lord Voldemort. Harry battles him, and of course, wins :D
BTW: PLeeeeeeease read the book.....its brilliant and ull love it :D