Harry waited in the trees. Once one of them managed to hit his daughter with a spell, or even lay a hand on her, he'd be out there, the rest of the family close behind. He didn't even bother to stop James and Albus this time. They were in this together. Harry waited, his wand aimed directly at the leader's head. He was frozen, chills seeping into his body as he watched in horror as his daughter crumpled to the ground.
"LILY!" the family yelled as union, all bursting from the trees. The Death Eaters looked up, and started running towards Harry as if it was Christmas and they were children, and Harry was the presents. Harry and Ginny got in front of their children, wands and chins held high. Ginny could perform one of the worst (for the receiver) bat-boggy hexes ever, and a few unlucky Death Eaters became victims. Harry was firing off killing curses left and right, and his children marveled at his anger.
Albus knew only one dueling curse – expelliarmus – and his aim was horrible. Every once and a while, though, a wand would come over to him and hit him on the head.
James knew more curses and hexes – of course, nothing like his father. Most of the hexes he knew were for amusement – every once and a while a death eater would fall over because one leg was suddenly taller than another – or had lost his legs altogether. James' particular favorite was a hex that made the heads of people bigger (and heavier) than they ought to be, and they fell over, unbalanced.
Amazingly, by some coincidence, not one of the Potters was hit by a spell. All the Death Eaters were quickly taken care of, and the Potters put their attention on the Leader, who was standing above Lily, a wild look in his eye, touching a single spot on her forehead. Lily was twitching on the ground – not making a sound. James decided it would have been better if she was making a sound. Scorpius stood uneasily and joined them as they walked over to the Leader. Scorpius looked uneasily at Harry, but Harry just clapped him on the shoulder, and continued walking.
"Let Lily go," Scorpius' voice was a low hiss, almost snakelike. He was trembling with rage, and Harry, who was behind him, put his hands on Scorpius' shoulders. Scorpius was startled by the gesture, but he realized in a rush that he had Harry's approval.
"Let her go?" laughed the Leader. "I'm having the most magnificent fun, though. It would be a shame . . ."
"Let her go," Harry's voice was stern. "You wanted her to kill me. I'm right here, now. You can do it yourself."
The leader sighed "Yes, you did ruin the best part of the plan. I will deal with you in a moment. Right now, it's your daughter's turn."
"How do you know we won't leave?" hissed Ginny
"Leave?" the Leader laughed "leave you daughter? Please. You wouldn't even think about it." Ginny looked uneasily at her husband, knowing he was right.
"Duel us," Harry insisted "it's the honorable thing to do. Even you dearly deceased master knew that. Aren't you as smart as him?"
The Leader laughed "Trying to coax me into a fight, now are you, Harry? It's not going to work."
Ginny and Harry moved as one, aiming their wands at the Leader and shouting, "Avada Kervada!" Both missed, and the Leader spun on them, casting the full body-bind curse. They struggled feebly at it, and surprisingly, they were able to budge it, but only a little bit.
"Such rude manners," scolded the Leader. "I said you were next Harry. Wait your turn."
It was then that one of the boys standing by the fallen Harry and Ginny Potter did something very honorable – something that even the adults had failed to do. Albus Potter raised his wand and said, in a very loud voice,
"AVADA KERVADA!"
The spell hit the Leader square in the back, and for a moment, his eyes bugged out in disbelief. Then he fell with unearthly slowness, and he was dead before he hit the ground.
For a moment, the Potters and Scorpius just stared in disbelief. James let out a huge cheer, and clapped his brother on the back. Scorpius helped the other Potters up – they had broken the curse completely. Then Scorpius raced to Lily.
"How come no one could hurt us, Dad?" asked Albus
"Lily," Harry's voice was hoarse. "she was willing to die to save us. To save Scorpius and us. So they couldn't hurt us."
It's funny, in a way, if you think about it a little.