Harry Potter (Radcliffe) has not had a good summer. Not only has he had to put up with his overbearing Aunt Petunia (Shaw) and Uncle Vernon Dursley (Griffiths) and their dread of his magical abilities, but it seems as if Harry’s best friends Ron Weasley (Grint) and Hermione Granger (Watson) have forgotten him as they haven’t replied to a single one of his letters. Then, suddenly and mysteriously, house-elf Dobby appears in Harry’s bedroom and warns him of great danger if he should attempt to return to Hogwarts School of Witchcraft and Wizardry.

Dobby is so eager to prevent the young Gryffindor from returning to Hogwarts, he has blocked all of Ron and Hermione’s correspondence from reaching Harry. But despite the elf’s mischievous efforts, the ever-determined Harry is rescued from the Dursleys’ dreary clutches by Ron and his brothers – with the aid of a flying car! – and whisked into the warmth of the Weasley household.

But when Harry and Ron are suspiciously prevented from ente...