2020-10-08

During Aunt Marge's visit, the Dursleys become extremely creepy, even though Harry knows that underage wizards are not allowed to use magic outside Hogwarts school of Witchcraft and Wizardry. However, in an accident, Harry accidentally USES magic and escapes from the Dursleys (he is not punished for it later).

Harry ran out of the Dursleys' house and took the Knight Bus to London. The road, he heard that Sirius black escaped from azkaban prison (it is said that he once used a spell that killed 13 people, and will told voldemort, harry's parents address that voldemort killed James and lily), is the magic community into a panic, the ministry of magic to send hogwarts dementors protection, it is a big threat for harry, more tired in quidditch loss his nimbus 2000. Later, under the guidance of his new Defense against the Dark Arts teacher, Remus Lupin, Harry learns the Patronus charm, Expecto Patronum, which allows Him to summon a patronus (a silver stag) to repel the dementors.

At the start of the semester, hermione from professor McGonagall got a time converter (an hourglass, can turn back to the past), so hermione to catch up all elective classes (because of some class time overlap), Fred and George gave harry the marauder's map, the map was made by harry's father, James potter , Sirius black , Remus lupin , Peter pettigrew invention, the four of them study period is a clique at hogwarts, the map can show all the secret passage at hogwarts.

Later, harry found that Sirius was innocent, the real culprit is Peter pettigrew, he was to all offences referred to Sirius, and afterwards incarnation into a mouse hidden, and the ministry of magic is still that Sirius guilty, finally with the help of the time Turner, such as person's success in life to help harry Sirius fled, while disorderly escape, it is a pity that Peter back to voldemort's ready to help him make a comeback. And in his last letter from Sirius, he said he had sent the naked Firebolt