<P> During another summer with his Aunt Petunia and Uncle Vernon , Harry Potter and Dudley are attacked by Dementors . After using magic to save Dudley and himself , Harry is expelled from Hogwarts , but the decision is later reversed after a hearing at the Ministry of Magic . Harry is whisked off by a group of wizards including Mad - Eye Moody , Remus Lupin , and several new faces , including Nymphadora Tonks and Kingsley Shacklebolt , to Number 12 , Grimmauld Place , the childhood home of his godfather , Sirius Black . The building also serves as the headquarters of the Order of the Phoenix , a secret organisation founded by Albus Dumbledore , informs Harry Potter that the Ministry of Magic is oblivious to Lord Voldemort 's return . At the Order 's headquarters , Sirius Black , mentions that Voldemort is after an object he did not have during his previous attack . </P>
<P> During another summer with his Aunt Petunia and Uncle Vernon , Harry Potter and Dudley are attacked by Dementors . After using magic to save Dudley and himself , Harry is expelled from Hogwarts , but the decision is later reversed after a hearing at the Ministry of Magic . Harry is whisked off by a group of wizards including Mad - Eye Moody , Remus Lupin , and several new faces , including Nymphadora Tonks and Kingsley Shacklebolt , to Number 12 , Grimmauld Place , the childhood home of his godfather , Sirius Black . The building also serves as the headquarters of the Order of the Phoenix , a secret organisation founded by Albus Dumbledore , informs Harry Potter that the Ministry of Magic is oblivious to Lord Voldemort 's return . At the Order 's headquarters , Sirius Black , mentions that Voldemort is after an object he did not have during his previous attack . </P>
what was the order of the phoenix in harry potter
what was the order of the phoenix in harry potter
a secret organisation founded by Albus Dumbledore
a secret organisation founded by Albus Dumbledore