Before the start of fifth year dumbledore changes the plans . Unfortunately he didn’t bother to inform harry . At his trial, harry realises that it is down to him to save his own skin . To do so his slytherin side must come out to play , and once it’s out it sticks around turning life at hogwarts on its head .
Magic can solve all the Wizarding World's problems. What's that? A prophecy that insists on a person? Things not quite going your way? I know, lets use this here ritual to summon another! It'll be great! - An eighteen year old Harry is called upon to deal with another dimension's irksome Dark Lord issue. This displeases him.