Help me find this story where harry and sirius are going back in time after harry defeated voldemort to protect his parents from the new dark king and his death eaters. Harry also has a snake I think and an elf. When they arrive in the past harry is extremely weak because of the strenght it took to defeat voldemort. Sometime later hermione and ron also come back in time. And in one chapter the death eaters are attaking hogwarts but it's holidays so no one apart from the teachers are at school I think and the death eaters have also got a basilisk. By the time of the second attack in the great hall harry captures peter pettigrew from the future. The dark king is lucius malfoy please help me