Harry is once again back "home" with the Dursleys, and his summer holidays aren't going to plan . The Dursleys have forbidden his broom, wand and all his school books. Harry Potter has not received any letters from his friends yet; Ron, Hermione. On his twelfth birthday (July 31), Dobby, a house-elf arrives to warn Harry that he will be in mortal danger if he returns to Hogwarts, confessing that he has been intercepting Harry's letters to make it seem as though his friends had forgotten him. Harry is still determined to return to Hogwarts, the best home he has ever known, so Dobby destroys the dessert for an important dinner party attended by Uncle Vernon's potential client and the client's wife. Harry is blamed by the Ministry of Magic for Dobby's charm and is told that if he does magic outside school again, he will be expelled. The Dursleys were unaware that Harry couldn't practice magic outside of school; now that they're no longer afraid of this, they lock him in his room and fit bars onto the bedroom window.
Fred, George and Ron Weasley rescue Harry and take him to the Burrow, the Weasleys' home. After a pleasant month together in the Burrow, everyone heads to Platform 9¾ at King's Cross Station to take the Hogwarts Express back to school. To their shock, Harry and Ron are unable to enter the barrier between platforms 9 and 10. In desperation, they steal the family's enchanted Ford Anglia and fly to Hogwarts but crash into the Whomping Willow and damage Ron's wand. The semi-sentient car ejects them and their belongings and disappears into the Forbidden Forest.