*NOTE* At this point, I'm having the story follow one of the boys, though this can always be changed in later chapters.
Luke awoke with a shiver. He was a handsome boy, skinny and a bit on the short side for being 13, with spiky bright red hair and a fair complexion. He loved playing football, but was usually outmatched by the taller and stronger boys in his class. He was somewhat of a loner, but had a few good friends he could count on. His family, though, was a different story. He didn't get along with anyone in it: his brother, his two sisters, and least of all his parents. Each night he wished there was some way he could get rid of them.
As he turned over, he heard the sound of boards and mortar breaking, and noticed he wasn't in his normal bed. He sat up, rubbed his eyes and looked around. It was then he noticed that he was outside, and sitting on what looked like debris. He was also naked, which wasn't how he remembered going to sleep as.
He looked up. He seemed to be surrounded by doll houses, but ones that were incredibly realistic. In fact, they looked almost exactly like those that made up his neighborhood...
It suddenly hit him--he was actually sitting in his neighborhood, and either everything had shrunk overnight, or, as he thought was more likely, he had somehow grown to a tremendous height! His first instinct was one of fear, but then he thought of how cool it was! He brushed the remains of his house off of his lap and stood up. As he did so, what was left standing collapsed. He chuckled a bit at all the destruction he was able to cause.
At this point, he noticed that, a few houses over, his best friend Ethan was also just waking up, and was also sitting in the remains of his house. He walked over to where Ethan was, just a few steps for the now-titanic Luke. Ethan was the same age as Luke, but (at their normal heights) was almost a foot taller with a swimmer's build (being a star swimmer), having hit his growth spurt early. He had shaggy jet-black hair that covered his ears, and an even more fair complexion than Luke. Ethan and Luke had known each other practically since they were born; their families went back several generations. They played a lot as kids, often wrestling each other, which was an even match until the past year or so as Ethan started sprouting up. Luke was slightly jealous of Ethan for his physical gifts, but didn't let that overcome their good friendship.
Luke stood in front of Ethan as he was finally sitting up, becoming aware of what had happened to him. He looked up into Luke's smiling face. "What's happened to us?" he asked.
"See for yourself," Luke replied. He reached out a hand and helped Ethan up.
"We're-- we're giants!" Ethan replied. He smiled, surveying the remains of his house around him. He finally looked back up to Luke, noticing that, instead of looking down at him like normal, he now only came up to his chest.
"Wow!" Ethan said, "looks like you finally got that growth spurt. And you're nude!"
"So are you!" Luke said. "But it's not like we've never seen each other naked before. We've got nothing to hide."
Luke gave Ethan a playful shove. He didn't know his own strength, though, and sent Ethan flying back down with a loud THUD on the ground. "Ow!" Ethan said as he stood up, rubbing his backside.
As they looked around them, they noticed other boys from their school in the distance who were also waking up to a big surprise. "Looks like we're not the only ones," Luke said. They decided to go into town to explore what had happened to them and their classmates.