Description Twins Harley and Rhiannon Hummingbird have always been competitive. But there's one thing the siblings can agree on - they can't wait to travel from their Oklahoma home to their grandparents' new cabin in northern Wisconsin. Both Harley and Rhiannon are looking forward to a week of swimming, boating, and most importantly, fishing. While there, they learn about the best baits, the best techniques, and the importance of location in having a successful day fishing. But the most important lessons they learn are about teamwork and persistence..