Dave is trapped in a cave. He cries and yelps for help but no one responds. He waves his flashlight and remains brave.
Through the thick fog, the dog saw the faint luster. With all his might and the strength he could muster, he barked and pushed as much as he could. He strengthened his shoulder and finally moved the boulder.
Dave was rescued at last! The whole process went by fast. They played with a ball the rest of the day. After all, that's the least Dave could do, to say Thank you!