Disclaimer: I do not own anything written by J.K. Rowling or anyone else. Harry did not kill the basilisk in second year. Instead, he used Gryffindor's sword to destroy the Horcrux and then rescue Ginny, after convincing the basilisk to leave him alone (because he's a Parselmouth). Please forgive mistakes, if possible.
Harry sighed as he looked out the train window. He was not looking forward to fifth year. Every year so far, something had happened, and he just knew something was bound to happen this year. "Cheer up mate" said Ron. "Something can't happen every year." "But I'm the Boy-Who-Lived, so something has to happen to me every year. I have damnable luck," replied Harry. "Just don't go looking for trouble and you'll be fine," said Hermione.
At the Welcoming Feast, after the Sorting Hat's song and the First Years were sorted, Professor Dumbledore stood up to speak. Before he could finish, he was interrupted by the new DADA professor, Dolores Umbridge. "Thank you, Headmaster, for those kind words of welcome. And how lovely to see all of your bright, happy faces, smiling up at me. I'm sure we're all going to be very good friends." "That's likely," responded Fred and George. "The Ministry of Magic has always considered the education of young witches and wizards of vital importance. Although each Headmaster has brought something new to this historic school, progress for the sake of progress must be discouraged. Let us preserve what must be preserved, perfect what can be perfected, and prune practices that ought to be prohibited." Dumbledore thanked her after she sat down and waved his hand to begin the Feast. Ron and harry didn't understand her speech, but Hermione informed them that "it means the Ministry is interfering at Hogwarts." After the Feast they went to the Gryffindor dorms to prepare for bed. As Harry was slipping into bed, he heard a snake. Hsst. Need a mate. I must find one soon.