Third grade is coming to an end, and Skylar sets her sights on summer vacation. She's hoping to visit her grandparents in Colorado, but her parents have a different plan. When Skylar learns that she will be hiking on the Appalachian Trail with her dad for summer vacay, she is not thrilled in the least. Skylar spends June training and trying to get excited about the hike. She does get to go shopping for hiking gear and run in a 5K race. But when she discovers what her friends are doing for their vacations, and that she will be missing the 4th of July celebrations, she becomes even sadder. As...