"Ouch!" yelled a started young Jack, who had just fallen down on the grass next to his friend Zoe. They were playing around in their parent's back yard as usual, and had managed to scramble themselves onto the ground and get dirty again. "Dinner!" their mother called out to them. "Beat you to it" said Zoe, and she started running back up to the house. "No fair!" Jack yelled back, slightly annoyed but also a little hungry he chased after his younger sister. As they were running back up the long hill to the house, they tripped over an oddly placed rock that hadn't been there the day before and fell into a puddle of mud. As they got up to brush themselves off, they both started to wonder about the rock. How did it get there? Who put it there? What was its sole purpose, just to hurt them? Of course, Jack couldn't let a rock beat up his little sister like that, so he started trying to move it and eventually budged it a couple of inches from where it originally was. It was obviously just placed down; even though it was a few inches deep into the soil, it had rained the day before, so the ground had naturally settled. As he continued budging the rock, their mother called out to them one more time. "Coming!" yelled Zoe, clearly a little hurt but now curious about the rock too. As they worked together to reveal what could have been underneath it, they found themselves uncovering a hole in the ground. As they flipped the rock over, Jack slipped back into the mud, giving Zoe the first glimpse at what could be under the mysteriously colored rock."Woah, that's crazy" said Zoe, and at that moment, she got sucked in.